Tootfinder

Even took two #panoramax images from the summit 😁 https://panoramax.openstreetmap.fr/?background=streets&focus=map&map=17/-30.958606/-64.323701&speed=250

#Clojure map-interval
Like `map` -- apply function `f` to each element in `col` in turn and return the values returned in sequence, but in a single thread and pausing between each invocation of `f`.

Useful for example in circumstances where you're querying a rate-limited service.

Map, but with a delay
Map, but with a delay. GitHub Gist: instantly share code, notes, and snippets.

Visual mental imagery and #aphantasia lesions map onto a convergent brain network https://www.medrxiv.org/content/10.1101/2025.05.23.25328072v1 by @…

Visual Mental Imagery and Aphantasia Lesions Map onto a Convergent Brain Network
Background Visual mental imagery, the ability to volitionally form perceptual representations without corresponding external stimuli, allows reliving of past events, solving problems and imagining the future. The absence of visual mental imagery, called aphantasia, has recently been recognized to occur in about 1% of the general population but the cause is uncertain. By studying rare cases of acquired aphantasia we can identify regions that when injured cause loss of visual mental imagery. Met…

wiki_science: Wikipedia Map of Science (2020)
A network of scientific fields, extracted from the English Wikipedia in early 2020. Nodes are wikipedia pages representing natural, formal, social and applied sciences, and two nodes are linked if the cosine similarity of the page content is above a threshold. See <http://www.s…

Somehow I managed 9.54 miles today in 48 minutes with an average speed of 12mph... I guess I made up for yesterday when I only did 4 indoor miles.
#biking #bikeTooter #mke

Trump started a redistricting war. Only Congress can stop it. (Richard L. Hasen/MSNBC)
https://www.msnbc.com/opinion/msnbc-opinion/trump-texas-redistricting-map-congress-voters-rcna223094
http://www.memeorandum.com/250805/p76#a250805p76

Top GOP Map-Drawer and Right-Wing Law Firm Team Up to Target Texas Minority Voters - Democracy Docket
https://www.democracydocket.com/analysis/top-gop-map-drawer-and-right-wing-law-firm-team-up-to-target-minority-voters-in-texas/

Velvet Sundown, an AI‑created band with ~850,000 monthly Spotify listeners and two recent albums, shows how some listeners are turning to anodyne AI music (Ian Bogost/The Atlantic)

My Road Trip With the Velvet Sundown
“​​Rubber burns, the map fades away / Chasing the ghosts of yesterday.” Sure, fine.

So, um, I don't remember SMB3 looking like this. Time to pull a 68pF capacitor and check to see if the Everdrive N8 has a firmware update available as I'm about 100% sure this is an MMC3 mapper issue.
#nes #nintendo

Minimizing the Gauss map area of surfaces in $\mathbb{S}^3$
Gerard Orriols, Tristan Rivi\`ere
https://arxiv.org/abs/2506.05141 https://

Minimizing the Gauss map area of surfaces in $\mathbb{S}^3$
We establish the lower bound of $4π(1+g)$ for the area of the Gauss map of any immersion of a closed oriented surface of genus $g$ into $\mathbb{S}^3$, taking values in the Grassmannian of $2$-planes in $\mathbb{R}^4$. This lower bound is proved to be optimal for any genus $g \in \mathbb{N}$ but attained only when $g = 0$. For $g \neq 0$ we describe the behavior of any minimizing sequence of embeddings: we prove that, modulo extraction of a subsequence, the surfaces converge in the Hausdorff d…

Seems almost too perfect that the creator of this map was named “Lewis Clark.” Undaunted courage, indeed!
https://sfba.social/@campmather/114639115803722982

This https://arxiv.org/abs/2505.10018 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

LEMON-Mapping: Loop-Enhanced Large-Scale Multi-Session Point Cloud Merging and Optimization for Globally Consistent Mapping
Multi-robot collaboration is becoming increasingly critical and presents significant challenges in modern robotics, especially for building a globally consistent, accurate map. Traditional multi-robot pose graph optimization (PGO) methods ensure basic global consistency but ignore the geometric structure of the map, and only use loop closures as constraints between pose nodes, leading to divergence and blurring in overlapping regions. To address this issue, we propose LEMON-Mapping, a loop-enha…

Saw a comment on a news article about NUAR (the database of underground assets) which linked to a 2014 RAIB report about an obstruction in an underground tunnel. And, yikes.
> The operators of the piling rig involved were unaware that they were working above an operational railway tunnel. Its position was not shown on the site plan, or on any map available to either the developer or the local planning authority.

Texas GOP governor sues to remove Democratic leader amid election map fight
Governor Abbott filed his lawsuit as other top Republicans raised the prospect of legal challenges and intensifying law enforcement actions against Democrats.
Texas Attorney General Ken Paxton (R) threatened to go to court within days to remove Democrats from office”

Donald Trump claimed Republicans are “entitled” to redraw Texas’s maps to give themselves five more safe U.S. House seats.
Th…

Texas GOP governor sues to remove Democratic leader amid election map fight
Gov. Greg Abbott filed his lawsuit as other top Republicans raised the prospect of intensifying law enforcement actions against Democrats.

A note on multiset reconstruction from sum and pairwise products
Stella Jiahui Li
https://arxiv.org/abs/2508.00971 https://arxiv.org/pdf/2508.00971

A note on multiset reconstruction from sum and pairwise products
Ballantine, Beck, and Merca defined a map $\mathrm{pre}_2$, which sends an integer partition $λ= (λ_1, \dots, λ_{\ell})$ to the set $\{λ_iλ_j : 1 \leq i < j \leq \ell\}$ consisting of the pairwise products of parts of $λ$. The same three authors and Sagan conjectured that for each $n$, the map $\mathrm{pre}_2$ is injective on the set of integer partitions of $n$. In this note, we prove their conjecture.

This https://arxiv.org/abs/2407.13448 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Pure maps are strict monomorphisms
We prove that $i)$ if $\mathcal{A}$ is $λ$-accessible and it is axiomatizable in (finitary) coherent logic then $λ$-pure maps are strict monomorphisms and $ii)$ if there is a proper class of strongly compact cardinals and $\mathcal{A}$ is $λ$-accessible then for some $μ\vartriangleright λ$ every $μ$-pure map is a strict monomorphism.

First day without rain.
Right after work we brought our car to some maintenance and drove back by bike. Well not the direct way, but a fun way 😊
It felt really good!
#cycling #BikeTooter #getoutside

Measuring the dynamics of an XXZ quantum simulator and controlling collapse through symmetries
D. J. Papoular
https://arxiv.org/abs/2508.02468 https://arxi…

Measuring the dynamics of an XXZ quantum simulator and controlling collapse through symmetries
We theoretically consider the quantum simulation of a spin Hamiltonian whose twelve sites are arranged in a planar configuration with high spatial symmetry, $D_{6h}$. We map the system onto an effective fermionic Hamiltonian and identify its symmetry group. Comparing different initial states evolving under the Heisenberg or XXZ Hamiltonians, we analyze the impact of symmetry on the probability distribution for the outcomes of a measurement in a given basis, as a function of the evolution time. …

Tensor Renormalization Group Meets Computer Assistance
Nikolay Ebel, Tom Kennedy, Slava Rychkov
https://arxiv.org/abs/2506.03247 https://

Tensor Renormalization Group Meets Computer Assistance
Tensor renormalization group, originally devised as a numerical technique, is emerging as a rigorous analytical framework for studying lattice models in statistical physics. Here we introduce a new renormalization map - the 2x1 map - which coarse-grains the lattice anisotropically by a factor of two in one direction followed by a 90-degree rotation. We develop a novel graphical language that translates the action of the 2x1 map into a system of inequalities on tensor components, with rigorous e…

on my blog!
p-fast trie: lexically ordered hash map
https://dotat.at/@/2025-08-04-p-fast-trie.html
trie lookups in O(log k) where k is the key length
asymptotically faster than the usual O(k) trie lookup, but at what cost in memory?

HeadZoom: Hands-Free Zooming and Panning for 2D Image Navigation Using Head Motion
Kaining Zhang, Catarina Moreira, Pedro Belchior, Gun Lee, Mark Billinghurst, Joaquim Jorge
https://arxiv.org/abs/2508.01765

HeadZoom: Hands-Free Zooming and Panning for 2D Image Navigation Using Head Motion
We introduce \textit{HeadZoom}, a hands-free interaction technique for navigating two-dimensional visual content using head movements. The system enables fluid zooming and panning by only using real-time head tracking. It supports natural control in applications such as map exploration, radiograph inspection, and image browsing, particularly where physical interaction is limited. We evaluated HeadZoom in a within-subjects user study comparing three interaction techniques-Static, Tilt Zoom, and …

Beto O'Rourke's political group is a top funder for Texas Democrats' exodus to block GOP congressional map (Owen Dahlkamp/The Texas Tribune)
https://www.texastribune.org/2025/08/05/texas-democrats-quorum-break-beto-orourke-illinois-funding/
http://www.memeorandum.com/250806/p9#a250806p9

The approach of cluster symmetry to Diophantine equations
Leizhen Bao, Fang Li
https://arxiv.org/abs/2508.02005 https://arxiv.org/pdf/2508.02005

The approach of cluster symmetry to Diophantine equations
This paper aims to use a cluster-theoretic approach to give a kind of Diophantine equation whose solutions can be obtained by starting from initial solutions through mutations. We establish a novel framework bridging cluster theory and Diophantine equations through the lens of cluster symmetry. On the one hand, we give the necessary and sufficient condition for Laurent polynomials to remain invariant under a given cluster symmetric map. On the other hand, we construct a discriminant algorithm…

Semantic Subtyping for Maps in Erlang
Erdem Yildirim, Albert Schimpf, Stefan Wehr, Annette Bieniusa
https://arxiv.org/abs/2508.00482 https://arxiv.org/pdf/…

Semantic Subtyping for Maps in Erlang
In this paper we will construct a set-theoretic model of types featuring type variables, base types, set-theoretic types and map types. Syntax of map types spans all the map types available in Erlang. The model of types is used to define a semantic subtyping relation based on set containment. The novelty of this work is the definition of subtyping over parameteric map types.

Debiasing Machine Learning Predictions for Causal Inference Without Additional Ground Truth Data: "One Map, Many Trials" in Satellite-Driven Poverty Analysis
Markus Pettersson, Connor T. Jerzak, Adel Daoud
https://arxiv.org/abs/2508.01341

Debiasing Machine Learning Predictions for Causal Inference Without Additional Ground Truth Data: "One Map, Many Trials" in Satellite-Driven Poverty Analysis
Machine learning models trained on Earth observation data, such as satellite imagery, have demonstrated significant promise in predicting household-level wealth indices, enabling the creation of high-resolution wealth maps that can be leveraged across multiple causal trials. However, because standard training objectives prioritize overall predictive accuracy, these predictions inherently suffer from shrinkage toward the mean, leading to attenuated estimates of causal treatment effects and limit…

Topology of boundary special generic maps into Euclidean spaces
Koki Iwakura
https://arxiv.org/abs/2508.01629 https://arxiv.org/pdf/2508.01629

Topology of boundary special generic maps into Euclidean spaces
In this paper, we study global properties of boundary special generic maps. A boundary special generic map is defined as a submersion of a compact connected manifold with non-empty boundary into Euclidean spaces, in which all singular points of its restriction to the boundary are boundary definite fold points. In certain dimensions, we characterize the manifolds with boundary that admit such maps up to diffeomorphism.

Multi-step Strong First-Order Electroweak Phase Transitions in the Inverted Type-I 2HDM: Parameter Space, Gravitational Waves, and Collider Phenomenology
Soojin Lee, Dongjoo Kim, Jin-Hwan Cho, Jinheung Kim, Jeonghyeon Song
https://arxiv.org/abs/2506.03260

Multi-step Strong First-Order Electroweak Phase Transitions in the Inverted Type-I 2HDM: Parameter Space, Gravitational Waves, and Collider Phenomenology
We investigate the nature of the electroweak phase transition (EWPT) in the Type-I two-Higgs-doublet model under the inverted Higgs scenario, where the observed 125 GeV Higgs boson corresponds to the heavier \textit{CP}-even scalar. We systematically map the parameter space viable for strong first-order EWPTs (SFOEWPTs) under current theoretical and experimental constraints, revealing that such transitions can occur through one-step, two-step, and rarely three-step pathways with distinct phenom…

This https://arxiv.org/abs/2308.02636 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Learning from Topology: Cosmological Parameter Estimation from the Large-scale Structure
The topology of the large-scale structure of the universe contains valuable information on the underlying cosmological parameters. While persistent homology can extract this topological information, the optimal method for parameter estimation from the tool remains an open question. To address this, we propose a neural network model to map persistence images to cosmological parameters. Through a parameter recovery test, we demonstrate that our model makes accurate and precise estimates, consider…

This https://arxiv.org/abs/2502.12010 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Hyperplane arrangements and the Gauss map of a pencil
We show that the coefficients of the characteristic polynomial of a central hyperplane arrangement $\mathcal A$, coincide with the multidegrees of the Gauss map of a pencil of hypersurfaces naturally associated to $\mathcal A$. As a consequence, we obtain a proof of the Heron-Rota-Welsh conjecture for matroids representable over a field of characteristic zero.

This https://arxiv.org/abs/2409.08429 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

The Atacama Cosmology Telescope: Systematic Transient Search of Single Observation Maps
We conduct a systematic search for astrophysical transients using data from the Atacama Cosmology Telescope (ACT). The data were taken from 2017 to 2022 in three frequency bands spanning 77 GHz to 277 GHz. In this paper we present a pipeline for transient detection using single observation maps where each pixel of a map contains one observation with an integration time of approximately four minutes. We detect 34 transient events at 27 unique locations. All but two of the transients are associat…

The tensor triangular geometry of fully faithful functors
Beren Sanders
https://arxiv.org/abs/2508.02105 https://arxiv.org/pdf/2508.02105

The tensor triangular geometry of fully faithful functors
We prove that the map on Balmer spectra induced by a fully faithful geometric functor is a quotient map whose fibers are connected. This is an analogue of the Zariski Connectedness Theorem in algebraic geometry and it can be applied to a plethora of examples in equivariant and motivic mathematics. We isolate a significant source of examples by introducing the "concentration" of a tt-category at a well-behaved chosen set of compact generators. Various categories of cellular objects arise in this…

Learning to cluster neuronal function
Nina S. Nellen, Polina Turishcheva, Michaela Vystr\v{c}ilov\'a, Shashwat Sridhar, Tim Gollisch, Andreas S. Tolias, Alexander S. Ecker
https://arxiv.org/abs/2506.03293

Learning to cluster neuronal function
Deep neural networks trained to predict neural activity from visual input and behaviour have shown great potential to serve as digital twins of the visual cortex. Per-neuron embeddings derived from these models could potentially be used to map the functional landscape or identify cell types. However, state-of-the-art predictive models of mouse V1 do not generate functional embeddings that exhibit clear clustering patterns which would correspond to cell types. This raises the question whether th…

Crowdsourced map of Flock ALPRs (automated license plate readers):
https://deflock.me/map

DeFlock
Spot, map, and resist automated license plate readers (ALPRs) near you.

GÉANT’s GN4-3N project is a finalist in the European Digital Connectivity Awards 2025 🎉
We’re honoured to be nominated in the “Cross-border and international connectivity” category, recognising the GN4-3N project’s role in building a more inclusive, resilient, and future-proof network infrastructure for the European #Research &

The analytically tractable zoo of similarity-induced exceptional structures
Anton Montag, Jordan Isaacs, Marcus St{\aa}lhammar, Flore K. Kunst
https://arxiv.org/abs/2508.02565 h…

The analytically tractable zoo of similarity-induced exceptional structures
Exceptional points (EPs) are non-Hermitian spectral degeneracies marking a simultaneous coalescence of eigenvalues and eigenvectors. Despite the fact that multiband $n$-fold EPs (EP$n$s) generically emerge as special points on manifolds of EP$m$s, where $m

Springtime in Spain: Sevilla airport already hit 40°C today!
Map: https://www.aemet.es/es/eltiempo/observacion/ultimosdatos?k=and&w=1&datos=img&f=tmax

El Tiempo. Hoy y últimos días: Andalucía - Resumen jueves 29 - Mapa - Temperatura máxima (°C) - Agencia Estatal de Meteorología - AEMET. Gobierno de España
El Tiempo. Datos horarios y resúmenes diarios de la red de estaciones automáticas: Andalucía - Resumen jueves 29 - Mapa - Temperatura máxima (°C)

out today: the #GratefulDead's new 60-CD "enjoying the ride" box. i wrote a ton of liner notes for this, including mini-essays about all the shows & venues, tour lore, & many maps. play with an interactive map: https://tmns.dead.n…

Take a trip to the fantastical land of the Grateful Dead
Follow the Heady Highway to discover storied venues that hosted legendary live performances by the Dead from shows spanning 25 years

Exact CHY Integrand Construction Using Combinatorial Neural Networks and Discrete Optimization
Simeng Li, Yaobo Zhang
https://arxiv.org/abs/2508.02248 https://

Exact CHY Integrand Construction Using Combinatorial Neural Networks and Discrete Optimization
We present a novel approach to the inverse CHY problem-constructing integrands from desired pole structures-by establishing a correspondence between CHY combinatorics and Combinatorial Neural Networks (CNNs). Our key innovation is the generalized pole degree $K(s_A)$, which is additive under integrand multiplication and satisfies hierarchical recursion relations. These recursions naturally map to CNN message-passing architectures, enabling discrete automatic differentiation that preserves exact…

This https://arxiv.org/abs/2404.14096 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

The coproduct for the affine Yangian and the parabolic induction for non-rectangular $W$-algebras
By using the coproduct and evaluation map for the affine Yangian and the Miura map for non-rectangular $W$-algebras, we construct a homomorphism from the affine Yangian associated with $\widehat{\mathfrak{sl}}(n)$ to the universal enveloping algebra of a non-rectangular $W$-algebra of type $A$, which is an affine analogue of the one given in De Sole-Kac-Valeri. As a consequence, we find that the coproduct for the affine Yangian is compatible with some of the parabolic induction for non-rectangu…

Hey Google,
Now We Have This New Private, Offline Alternative:
A maps app that doesn't track you but lets you record your path on the map
https://news.itsfoss.com/comaps-launch/

Look Google, We Have This New Private, Offline Alternative Now
A maps app that doesn't track you but lets you track your path on the map. A pathbreaking open source alternative.

Replaced article(s) found for cs.FL. https://arxiv.org/list/cs.FL/new
[1/1]:
- A Finite-State Symbolic Automaton Model for the Collatz Map and Its Convergence Properties
Leonard Ben Aurel Brauer

This https://arxiv.org/abs/2504.19466 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

The partial derivative of ratios of Schur polynomials and applications to symplectic quotients
We show that a ratio of Schur polynomials $s_λ/s_ρ$ associated to partitions $λ$ and $ρ$ such $λ\subsetneqρ$ has a negative partial derivative at any point where all variables are positive. This is accomplished by establishing an injective map between sets of pairs of skew semistandard Young tableaux that preserves the product of the corresponding monomials. We use this result and the description of the first Laurent coefficient of the Hilbert series of the graded algebra of regular funct…

Supermarket chain Lidl is making its heavy-duty vehicle chargers at depots in the Netherlands available to other truck users by prior arrangement. This is a great way to increase charger (and on-site renewables!) utilisation and extend truck charging options!
https://corporate.lidl.nl/duurzaamheid

MudiNet: Task-guided Disentangled Representation Learning for 5G Indoor Multipath-assisted Positioning
Ye Tian, Xueting Xu, Ao Peng
https://arxiv.org/abs/2506.04024

MudiNet: Task-guided Disentangled Representation Learning for 5G Indoor Multipath-assisted Positioning
In the fifth-generation communication system (5G), multipath-assisted positioning (MAP) has emerged as a promising approach. With the enhancement of signal resolution, multipath component (MPC) are no longer regarded as noise but rather as valuable information that can contribute to positioning. However, existing research often treats reflective surfaces as ideal reflectors, while being powerless in the face of indistinguishable multipath caused by diffuse reflectors. This study approaches diff…

«Our project [#openstreetmap] is constantly under a threat from technical people, who see it as a database, or a fixed structure, or an API to work with – and not as a community of people with specific knowledge who make the map as a by-product of understanding the world.»
So we'll put by @… ❤️🙏

fly_larva: Drosophila larva brain (2023)
A complete synaptic map of the brain connectome of the larva of the fruit fly Drosophila melanogaster. Nodes are neurons, and edges are synaptic connections, traced individually from brain image sections using three-dimensional electron microscopy–based reconstruction. Node metadata include the neuron hempisphere, hemispherical homologue, cell type, annotations, and inferred cluster. Edge metadata include the type of interaction (`'aa'`,…

IGL-Nav: Incremental 3D Gaussian Localization for Image-goal Navigation
Wenxuan Guo, Xiuwei Xu, Hang Yin, Ziwei Wang, Jianjiang Feng, Jie Zhou, Jiwen Lu
https://arxiv.org/abs/2508.00823

IGL-Nav: Incremental 3D Gaussian Localization for Image-goal Navigation
Visual navigation with an image as goal is a fundamental and challenging problem. Conventional methods either rely on end-to-end RL learning or modular-based policy with topological graph or BEV map as memory, which cannot fully model the geometric relationship between the explored 3D environment and the goal image. In order to efficiently and accurately localize the goal image in 3D space, we build our navigation system upon the renderable 3D gaussian (3DGS) representation. However, due to the…

See the Countries Under Trump's New Travel Ban (Allison McCann/New York Times)
https://www.nytimes.com/interactive/2025/06/04/us/politics/trump-travel-ban-map.html
http://www.memeorandum.com/250605/p4#a250605p4

Partial regularity of optimal transport with Coulomb cost
Gero Friesecke, Tobias Ried
https://arxiv.org/abs/2508.01756 https://arxiv.org/pdf/2508.01756

Partial regularity of optimal transport with Coulomb cost
We prove that for two-marginal optimal transport with Coulomb cost, the optimal map is a $C^{1,α}$ diffeomorphism outside a closed set of Lebesgue measure zero provided the marginals are $α$-Hölder continuous and bounded away from zero and infinity. Excluding a set of measure zero is necessary as optimal maps for the Coulomb cost have long been known to exhibit jump singularities across codimension $1$ surfaces (even for smooth marginals on convex domains).

Nach einem Brandanschlag auf ein Umspannwerk(?) in Südfrankreich ist dort das Netz teilweise zusammengebrochen. Zeitweise waren mehr als 160k Haushalte betroffen, u.A. auch in Cannes, wo grade das gleichnamige Filmfestival stattfindet.
Spekulation: Dürfte im Bereich Poste électrique du Biançon gewesen sein. Wichtiger Knotenpunkt mit 400/225kV und nem 20MW Wasserkraftwerk (Barrage de Saint-Cassien) dran.

Coercivity-size map of magnetic nanoflowers: spin disorder tunes the vortex reversal mechanism and tailors the hyperthermia sweet spot
Elizabeth M Jefremovas, Lisa Calus, Jonathan Leliaert
https://arxiv.org/abs/2507.02154

Coercivity-size map of magnetic nanoflowers: spin disorder tunes the vortex reversal mechanism and tailors the hyperthermia sweet spot
Iron-oxide nanoflowers (NFs) are one of the most efficient nanoheaters for magnetic hyperthermia therapy (MHT). However, the physics underlying the spin texture of disordered iron-oxide nanoparticles beyond the single-domain limit remains still poorly understood. Using large-scale micromagnetic simulations we completely map the magnetization of NFs over an unprecedented size range, from 10 to 400 nm in diameter, connecting their microstructure to their macroscopic magnetic response. Above the s…

Great chart of #SEAsia's largest urban parks. Should be an national embarrassment how far down you have to scroll to find the any #city #park from one country in particular, the name of which wouldn't surprise any…

Largest urban parks in Southeast Asia
A list of the largest urban parks in Southeast Asia. Urban parks in Southeast Asia map [Map of urban parks in Southeast Asia.] Notes about the urban park list This is an ongoing list that I am coll…

Variation of Kahler-Einstein metrics with mixed singularities
Xin Fu, Jiyuan Han, Yongpan Zou
https://arxiv.org/abs/2508.02212 https://arxiv.org/pdf/2508.0…

Variation of Kahler-Einstein metrics with mixed singularities
In this short note, we consider a fiberation f: (X, Delta) to Y between two compact Kahler manifolds with generic fiber of f being a smooth log canonical pair with ample canonical divisor, we prove that the current induced by variation of Kahler Einsteins with mixed cone and Poincare singularities is positive, hence generalize the result of Schumacher in the smooth case [22] and the result of Guenancia in the conic case [14]. As application, we prove the surjectivity of Albanese map for a smoot…

Really not a fan of this watch. I sort of hate it a bit. I knew I wouldn't like it before I bought it. I actually bought it mainly to check on some things and see how #Skmei is progressing in certain areas. However even with my low expectations it is disappointing.

Damn, this ebike things is actually pretty cool. I did my normal ride in the cemetery without using the motor and my stats are pretty damn close to my acoustic rides.
I’m probably going to have a lot to say about it this week.
#biking #bikeTooter

A post from the archive 📫:
Columbus Fantasy Transit Map
#musings

I don't remember Q3 bots being pushovers? Which is a relief because I stink at this game and I still love it to death. Also, always bunny hop like no one's watching. Map: Campgrounds.
Quake Live Team Deathmatch Hardcore Bot Difficulty - cellfourteen
https://www.youtube.com/watch?v=syv6baNm--

#eathquake in #NewJersey
https://masto.ai/@lastquake/114962461896052590

Å reise med tog kan være en prŸvelse.
Bane Nor bŸr ta seg et brett med boller og begynne med ansvarliggjŸring.
Vy også. Standarden på vognsett fra 90 tallet er begredelig. Vedlikehold og renhold likeså.
Er det ikke vognsett med problemer, så er det sporveksler og lyssignaler.
Etter å ha stått stille sŸr for Drammen i tre kvarter, er det bevegelse igjen... men hvor lenge?
#NorskTut

Pluto Geologic Map: Use of Crater Data to Understand Age Relationships
Kelsi N. Singer, Oliver L. White, Sarah Greenstreet, Jeffrey M. Moore, David A. Williams, Rosaly M. C. Lopes
https://arxiv.org/abs/2506.00254

Pluto Geologic Map: Use of Crater Data to Understand Age Relationships
Pluto's surface displays a wide variety of geologic units from smooth plains to extremely rugged mountainous expanses. These terrains range in age from young, actively resurfaced regions (no observable craters even in the highest-resolution New Horizons images) to old, heavily cratered, eroded regions. Here we expand upon the crater data analysis and the independent crater data set used in the production of a 1:7M scale geologic map of Pluto that is to be published by the United States Geologic…

Regularity of the Capacity in Operator Scaling
Neal Bez, Anthony Gauvan, Hiroshi Tsuji
https://arxiv.org/abs/2508.02118 https://arxiv.org/pdf/2508.02118

Regularity of the Capacity in Operator Scaling
Completely positive operators are fundamental objects in quantum information theory and the capacity of such operators plays a pivotal role in the operator scaling algorithm. Using this algorithm, Garg--Gurvits--Oliveira--Wigderson recently established a certain quantitative continuity result for the capacity map at rational points. We show by different means that operator capacity possesses significantly greater regularity. Our argument gives local Hölder continuity at all points and rests on…

I love this map, seen at the American Museum in Bath. The creatures are closer to reality than many such maps, but still very much mythical.
Map of the Polar Regions
Theodor de Bry (1528-1598) Copperplate engraving, Frankfurt, 1601
#Art #maps

We in Game Workers Unite Ireland stand in solidarity with Animation Workers of Ireland, and the international trade union coalition happening to organise against the threat of AI in the animation industry, and we support their call to acton.
Join them Thursday 12 June at 14:00 at the Pâquier in Annecy!!
#Animation

Boggles my mind that I can, on a whim, take a day trip to see my favorite building in the world at a great price with several fast trains *per hour*. (Why on a whim? Because I never even considered it, based on the map.) Italian rail is quite something. #Italy25

Meine liebsten OpenStreetMap-Angebote
* #Mapy - fast wie Google Maps (mit Kommentare, Routen, Umgebung) https://mapy.com/de/zakladni?source=osm&a…

Ransomware Group Anubis has leaked what they extracted from Disneyland Paris
#ransomware

Ransomware.live 👀
Ransomware.live tracks ransomware groups and their activity. It was created by Julien Mousqueton, a security researcher. The website provides information on the groups' infrastructure, victims, and payment demands. It also includes a live map that shows the latest ransomware attacks.

Isomorphism of \'etale fundamental groups lifts to isomorphism of stratified fundamental group
Indranil Biswas, Manish Kumar, A. J. Parameswaran
https://arxiv.org/abs/2506.03829

Isomorphism of étale fundamental groups lifts to isomorphism of stratified fundamental group
It is shown that if a finite generically smooth morphism $f\,:\,Y\,\longrightarrow\, X$ of smooth projective varieties induces an isomorphism of the étale fundamental groups, then the induced map of the stratified fundamental groups $π_1^{str}(f)\, :\, π_1^{str}(Y,\, y)\,\longrightarrow\, π_1^{str}(X,\, f(y))$ is also an isomorphism.

On measure homology of mildly wild spaces
Thilo Kuessner, Janusz Przewocki, Andreas Zastrow
https://arxiv.org/abs/2506.03368 https://…

On measure homology of mildly wild spaces
We prove injectivity of the canonical map from singular homology to measure homology for certain ``mildly wild" spaces, that is, certain spaces not having the homotopy type of a CW-complex, but having countable fundamental groups.

Structure Fire
1200 Silvestre Road
in Hope Ranch,
#SantaBarbara

Has anyone used #Commonplace to respond to eg a local council survey? I'm trying to draw my ideal cycle route through town on a map and I've ended up just closing the tab as it's so difficult to do without constantly clicking where you don't mean to and so on, I've just lost patience with it. Their surveys are complicated enough - I never know how I ended up at a certain pa…

> Sex chromosomes usually determine whether you are female or male. Women are XX. Men are XY. However, genetically, a few women are actually men. They grow up as women with a woman’s body, and most only discover well into puberty that they are different.
https://novonordiskfonden.dk/en/n…

Extremely hot day in the Netherlands again, especially in the South. In over a century of records until 2019, no station in the country had ever reached a temperature of 39°C.
Today was the third time the city of Maastricht saw it happen, and this was by far the earliest in summer for any station.
#heatwave

YOLO-Count: Differentiable Object Counting for Text-to-Image Generation
Guanning Zeng, Xiang Zhang, Zirui Wang, Haiyang Xu, Zeyuan Chen, Bingnan Li, Zhuowen Tu
https://arxiv.org/abs/2508.00728

YOLO-Count: Differentiable Object Counting for Text-to-Image Generation
We propose YOLO-Count, a differentiable open-vocabulary object counting model that tackles both general counting challenges and enables precise quantity control for text-to-image (T2I) generation. A core contribution is the 'cardinality' map, a novel regression target that accounts for variations in object size and spatial distribution. Leveraging representation alignment and a hybrid strong-weak supervision scheme, YOLO-Count bridges the gap between open-vocabulary counting and T2I generation …

The algebraic small object argument as a saturation
Evan Cavallo, Christian Sattler
https://arxiv.org/abs/2506.02759 https://arxiv.or…

The algebraic small object argument as a saturation
We analyze the structure of left maps in algebraic weak factorization systems constructed using Garner's algebraic small object argument. We find that any left map can be constructed from generators in Bourke and Garner's double category of left maps by operations that parallel the classical cell-complex-forming operations of Quillen's small object argument (coproducts, cobase changes, transfinite composites, and retracts). Our main theorems are phrased as "saturation" principles, which express…

Cohomology of hypersurfaces of weighted projective space and the intersection form on $H^2$
Anna-Maria Raukh
https://arxiv.org/abs/2506.04094 https://

Cohomology of hypersurfaces of weighted projective space and the intersection form on $H^2$
Given a hypersurface $i \colon X \hookrightarrow \widetilde{P}^n$ in a weighted projective space, we compute the intersection form on the second cohomology $H^2(X, \mathbb{Z})^{\otimes n-1} \to \mathbb{Z}$ for the purpose of identifying Fano manifolds obtained from smoothing singular Fanos. In the process, we describe the integer cohomology groups $H^k(X, \mathbb{Z})$ for $k

The Szczarba map and the cubical cobar construction
Matthias Franz
https://arxiv.org/abs/2507.01669 https://arxiv.org/pdf/2507.01669

The Szczarba map and the cubical cobar construction
We consider a twisting function from a 1-reduced simplicial set $X$ to a simplicial group $G$. We prove in detail that the associated Szczarba operators induce a simplicial map from the triangulation of the cubical cobar construction of $X$ to $G$. This confirms a result due to Minichiello-Rivera-Zeinalian and gives, as pointed out by these authors, a conceptual proof of the fact that the dga map $Ω\,C(X) \to C(G)$ induced by Szczarba's twisting cochain is comultiplicative.

This https://arxiv.org/abs/2412.18457 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Patterns of Geodesics, Shearing, and Anosov Representations of the Modular Group
Let $X=SL_3(\R)/SO(3)$. Let $\cal DFR$ be the space of discrete faithful representations of the modular group into ${\rm Isom\/}(X)$ which map the order $2$ generator to an isometry with a unique fixed point. I prove many things about the component $\cal B$ of $\cal DFR$ known as the Barbot component: It is homeomorphic to $\R^2 \times [0,\infty)$. The boundary parametrizes the Pappus representations from [{\bf S0\/}]. The interior parametrizes the complete extension of the family of Anosov rep…

2D End-to-End Modeling of Kilonovae from Binary Neutron-Star Merger Remnants
Lieke Sippens Groenewegen, Sanjana Curtis, Philipp M\"osta, Daniel Kasen, Daniel Brethauer
https://arxiv.org/abs/2508.00062

2D End-to-End Modeling of Kilonovae from Binary Neutron-Star Merger Remnants
We investigate the kilonova emission resulting from outflows produced in a three-dimensional (3D) general-relativistic magnetohydrodynamic (GRMHD) simulation of a hypermassive neutron star (HMNS) remnant. We map the outflows into the FLASH hydrodynamics code to model their expansion in axisymmetry, and study the effects of employing different $r$-process heating rates. Except for the highest heating rate prescription, we find no significant differences with respect to overall ejecta dynamics an…

I had to pedal like crazy the last half mile to keep my average speed at 12mph…
#biking #bikeTooter #mke #milwaukee

Sometimes I'm falsely credited with discovering the North Bernal Wiggle, the low-traffic bike route up to Bernal Heights Park that avoids steeper slopes. But it was actually Brian Coyne who told me about it.

BS-1-to-N: Diffusion-Based Environment-Aware Cross-BS Channel Knowledge Map Generation for Cell-Free Networks
Zhuoyin Dai, Di Wu, Yong Zeng, Xiaoli Xu, Xinyi Wang, Zesong Fei
https://arxiv.org/abs/2507.23236

BS-1-to-N: Diffusion-Based Environment-Aware Cross-BS Channel Knowledge Map Generation for Cell-Free Networks
Channel knowledge map (CKM) inference across base stations (BSs) is the key to achieving efficient environmentaware communications. This paper proposes an environmentaware cross-BS CKM inference method called BS-1-to-N based on the generative diffusion model. To this end, we first design the BS location embedding (BSLE) method tailored for cross-BS CKM inference to embed BS location information in the feature vector of CKM. Further, we utilize the cross- and self-attention mechanism for the pro…

A Finite-State Symbolic Automaton Model for the Collatz Map and Its Convergence Properties
Leonard Ben Aurel Brauer
https://arxiv.org/abs/2506.21728 https:…

A Finite-State Symbolic Automaton Model for the Collatz Map and Its Convergence Properties
We present a finite-state, deterministic automaton that emulates the Collatz function by operating on base-10 digit sequences. Each digit is represented as a symbolic triplet capturing its value, the parity of the next digit, and a local carry value, resulting in a state space of exactly 60 configurations. The transition rules are local, total, and parity-dependent, yet collectively reproduce the global behavior of the Collatz map through digitwise operations. All symbolic trajectories reduce t…

Peripheral subgroups of Kleinian groups
Alex Elzenaar
https://arxiv.org/abs/2508.00297 https://arxiv.org/pdf/2508.00297

Peripheral subgroups of Kleinian groups
The conformal boundary of a hyperbolic $3$-manifold $M$ is a union of Riemann surfaces. If any of these Riemann surfaces has a nontrivial Teichmüller space, then the hyperbolic metric of $M$ can be deformed quasi-isometrically. These deformations correspond to a small pertubations in the matrices of the holonomy group of $M$, which together give an island of discrete representations around the identity map in $ X=\mathrm{Hom}(π_1(M), \mathsf{PSL}(2,\mathbb{C})) $. Determining the extent of th…

«Real-world map data is helping make better games about farms and transportation»
Interesting piece on how games use #OpenStreetMap data. No mention of how those games might accidentally incentivize vandalism to achieve game objectives though!
https://www.theverge.com/games/672035/openstreetmap-data-games

This https://arxiv.org/abs/2408.03431 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Compactifications of phylogenetic systems and species of electrical networks
We describe new spaces and maps. Our graphical map is a visual and numerical correspondence between spaces of circular electrical networks and circular planar split systems. When restricted to the planar circular electrical case, this graphical map finds the split system uniquely associated with the Kalmanson resistance distance of the dual network, matching the induced split system familiar from phylogenetics. This correspondence is extended to compactifications of the respective spaces, takin…

This https://arxiv.org/abs/2505.12364 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On a Riemann-Roch formula for stacks with finite cyclotomic inertia
B. Toen defined a Riemann-Roch map from the rational algebraic K-theory of a tame Deligne-Mumford quotient stack to the étale K-theory of its inertia. He proved that this map is an isomorphism and that it is covariant with respect to proper maps. Moreover G. Vezzosi and A. Vistoli proved a decomposition theorem for the equivariant K-theory of a noetherian scheme. In this paper we give a geometric definition of the Vezzosi-Vistoli decomposition, interpreting the pieces as corresponding to the c…

Today’s ride was tough but I got in 12 miles and saw a bird… I did see another large bird and a baby rabbit but didn’t get photos.
#biking #bikeTooter #mke

wiki_science: Wikipedia Map of Science (2020)
A network of scientific fields, extracted from the English Wikipedia in early 2020. Nodes are wikipedia pages representing natural, formal, social and applied sciences, and two nodes are linked if the cosine similarity of the page content is above a threshold. See <http://www.s…

Kan Approximations of the Persistent Homology Transform
Shreya Arya, Justin Curry
https://arxiv.org/abs/2507.22816 https://arxiv.org/pdf/2507.22816

Kan Approximations of the Persistent Homology Transform
The persistent homology transform (PHT) of a subset $M \subset \mathbb{R}^d$ is a map $\text{PHT}(M):\mathbb{S}^{d-1} \to \mathbf{Dgm}$ from the unit sphere to the space of persistence diagrams. This map assigns to each direction $v\in \mathbb{S}^{d-1}$ the persistent homology of the filtration of $M$ in direction $v$. In practice, one can only sample the map $\text{PHT}(M)$ at a finite set of directions $A \subset \mathbb{S}^{d-1}$. This suggests two natural questions: (1) Can we interpolate t…

Seen David Attenborough's film Ocean? Track countries' progress in signing and ratifying the High Seas Treaty, needed to protect 30% of the oceans.
https://highseasalliance.org/treaty-ratification/map/
Here's Europe:
orange = signed only,

High Seas Treaty Ratification Map
At least 60 countries must sign and ratify the High Seas Treaty for it to become international law. Follow progress and see who has signed and ratify the treaty on the world map.

«Real-world map data is helping make better games about farms and transportation»
Interesting piece on how games use #OpenStreetMap data. No mention of how those games might accidentally incentivize vandalism to achieve game objectives though!
https://www.theverge.com/games/672035/openstreetmap-data-games

This https://arxiv.org/abs/2407.10145 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Simplifying generic smooth maps to the 2-sphere and to the plane
We study how to construct explicit deformations of generic smooth maps from closed $n$--dimensional manifolds $M$ with $n \geq 2$ to the $2$--sphere $S^2$ and show that every smooth map $M \to S^2$ is homotopic to a $C^\infty$ stable map with at most one cusp point and with only folds of the middle absolute index. Furthermore, if $n$ is even, such a $C^\infty$ stable map can be so constructed that the restriction to the singular point set is a topological embedding. As a corollary, we show that…

Map view of Mastodon
https://fediverse.observer/map

Spectral coverings without embeddings
Eric Boulter, Steven Rayan
https://arxiv.org/abs/2507.02127 https://arxiv.org/pdf/2507.02127

Spectral coverings without embeddings
In this article, we investigate a weakened version of the spectral correspondence for twisted Higgs bundles. Namely, we construct twisted Higgs bundles from a finite covering map and a vector bundle on that covering but without requiring that they match the eigen-data for some fixed twisted Higgs bundle. We investigate stability for twisted Higgs bundles constructed in this way, and compare our covering data to that of the traditional spectral cover.

Coarse cone quotients
Ulrich Bunke
https://arxiv.org/abs/2507.01412 https://arxiv.org/pdf/2507.01412…

Coarse cone quotients
We study the coarse motive of the quotient $\mathcal{O}^{\infty}(X)//G$ of the cone of a uniform bornological coarse space $X$ with $G$-action. If $X$ admits a sufficiently ergodic probability measure, then we show that the coarse assembly map for $\mathcal{O}^{\infty}(X)//G$ is not an equivalence. The main ideas are taken from a recent paper by C. Kitsios, T. Schick and F. Vigolo (arXiv:2504.21811) and adapted to the formalism of coarse homotopy theory based on bornological coarse spaces devel…