Tootfinder

@formschub@fnordon.de
2024-03-07 21:44:52

»People ask me to write. I don’t want to write. My writing would be very very dark. I would not be happy to identify the human race with any kind of respect. And yet I’m not – I have to modify that – I don’t go around hating everybody I meet, and I have friends, and I do trust in general. But mankind as a whole – no. An animal. A cruel animal.«
(Irene Weiss, Holocaust-Überlebende, die mit etwa 12 Jahren bei Ankunft im KZ Auschwitz den Großteil ihrer Familie verlor)

@formschub@fnordon.de
2024-03-07 21:44:52

@kexpmusicbot@mastodonapp.uk
2024-05-10 10:46:19

🔊 #NowPlaying on KEXP's #VarietyMix
Shabazz Palaces feat. Stas THEE Boss & Irene Barber:
🎵 Angela
#ShabazzPalaces #StasTHEEBoss #IreneBarber
#Bandcamp

@arXiv_mathCV_bot@mastoxiv.page
2024-05-07 06:57:34

Domains of existence of slice regular functions in one quaternionic variable
Xinyuan Dou, Ming Jin, Guangbin Ren, Irene Sabadini
https://arxiv.org/abs/2405.03394

Domains of existence of slice regular functions in one quaternionic variable
Recently, we introduced domains of slice regularity in the space $\mathbb{H}$ of quaternions and also proved that domains of slice regularity satisfy a symmetry with respect to paths, called $2$-path-symmetry. In this paper, we give a full characterization by showing that all $2$-path-symmetric slice-open sets are domains of slice regularity. In fact, we will prove a counterpart of the Cartan-Thullen theorem for slice regular functions, namely that a slice-open set is a domain of existence for …

@arXiv_mathOC_bot@mastoxiv.page
2024-05-06 06:58:04

Computational issues in Optimization for Deep networks
Corrado Coppola, Lorenzo Papa, Marco Boresta, Irene Amerini, Laura Palagi
https://arxiv.org/abs/2405.02089

Computational issues in Optimization for Deep networks
The paper aims to investigate relevant computational issues of deep neural network architectures with an eye to the interaction between the optimization algorithm and the classification performance. In particular, we aim to analyze the behaviour of state-of-the-art optimization algorithms in relationship to their hyperparameters setting in order to detect robustness with respect to the choice of a certain starting point in ending on different local solutions. We conduct extensive computational …

@arXiv_astrophCO_bot@mastoxiv.page
2024-05-06 07:24:15

The Simons Observatory: Combining cross-spectral foreground cleaning with multi-tracer $B$-mode delensing for improved constraints on inflation
Emilie Hertig, Kevin Wolz, Toshiya Namikawa, Ant\'on Baleato Lizancos, Susanna Azzoni, Irene Abril-Cabezas, David Alonso, Carlo Baccigalupi, Erminia Calabrese, Anthony Challinor, Josquin Errard, Giulio Fabbian, Baptiste Jost, Nicoletta Krachmalnicoff, Anto I. Lonappan, Magdy Morshed, Luca Pagano, Blake Sherwin

The Simons Observatory: Combining cross-spectral foreground cleaning with multi-tracer $B$-mode delensing for improved constraints on inflation
The Simons Observatory (SO), due to start full science operations in early 2025, aims to set tight constraints on inflationary physics by inferring the tensor-to-scalar ratio $r$ from measurements of CMB polarization $B$-modes. Its nominal design targets a precision $σ(r=0) \leq 0.003$ without delensing. Achieving this goal and further reducing uncertainties requires the mitigation of other sources of large-scale $B$-modes such as Galactic foregrounds and weak gravitational lensing. We present…

@BBC2MusicBot@mastodonapp.uk
2024-04-22 04:12:03

🔊 #NowPlaying on BBCRadio2's #OwainWynEvans
Irene Cara:
🎵 Fame
#IreneCara
https://open.spotify.com/track/5CI1FP2Volc9wjz2MBZsGx
https://opaledit.bandcamp.com/track/irene-cara-fame-opal-edit

@kexpmusicbot@mastodonapp.uk
2024-03-10 12:36:30

🔊 #NowPlaying on #KEXP's #VarietyMix
Shabazz Palaces feat. Stas THEE Boss & Irene Barber:
🎵 Angela
#ShabazzPalaces #StasTHEEBoss #IreneBarber
https://open.spotify.com/track/36TkDjlOyExWGWpeThOgsx
https://shabazzpalaces.bandcamp.com/track/angela

@fipmusicbot@mastodonapp.uk
2024-03-30 05:34:36

🔊 #NowPlaying on fip
Irene Reid:
🎵 I must be doing something right
#IreneReid
https://open.spotify.com/track/5XwnhLdKHwtsLOXi59FVNf

@arXiv_mathph_bot@mastoxiv.page
2024-04-30 07:02:36

Aharonov-Bohm effect and superoscillations
Fabrizio Colombo, Elodie Pozzi, Irene Sabadini, Brett D. Wick
https://arxiv.org/abs/2404.17828 https://

Aharonov-Bohm effect and superoscillations
The path-integral technique in quantum mechanics provides an intuitive framework for comprehending particle propagation and scattering. Calculating the propagator for the Aharonov-Bohm potential fits into the range of potentials in multiply-connected spaces, with the propagator represented through a series expansion. In this paper, we analyze the Schrödinger evolution of superoscillations, showing the supershift properties of the solution to the Schrödinger equation for this potential. Our pr…

@arXiv_csDM_bot@mastoxiv.page
2024-05-01 06:48:53

Cycles of Well-Linked Sets and an Elementary Bound for the Directed Grid Theorem
Meike Hatzel, Stephan Kreutzer, Marcelo Garlet Milani, Irene Muzi
https://arxiv.org/abs/2404.19222

Cycles of Well-Linked Sets and an Elementary Bound for the Directed Grid Theorem
In 2015, Kawarabayashi and Kreutzer proved the directed grid theorem confirming a conjecture by Reed, Johnson, Robertson, Seymour, and Thomas from the mid-nineties. The theorem states the existence of a function $f$ such that every digraph of directed tree-width $f(k)$ contains a cylindrical grid of order $k$ as a butterfly minor, but the given function grows non-elementarily with the size of the grid minor. In this paper we present an alternative proof of the directed grid theorem which is c…

@arXiv_astrophGA_bot@mastoxiv.page
2024-03-01 07:17:42

Chemical Diagnostics to Unveil Environments Enriched by First Stars
Irene Vanni, Stefania Salvadori, Valentina D'Odorico, George D. Becker, Guido Cupani
https://arxiv.org/abs/2402.18640

Chemical Diagnostics to Unveil Environments Enriched by First Stars
Unveiling the chemical fingerprints of the first (Pop III) stars is crucial for indirectly studying their properties and probing their massive nature. In particular, very massive Pop III stars explode as energetic Pair-Instability Supernovae (PISNe), so their chemical products might escape in the diffuse medium around galaxies, opening the possibility to observe their fingerprints in distant gas clouds. Recently, three z > 6.3 absorbers with abundances consistent with an enrichment from PISNe h…

@arXiv_eessSY_bot@mastoxiv.page
2024-03-28 07:19:40

A Dynamic Programming Approach for Road Traffic Estimation
Mattia Laurini, Irene Saccani, Stefano Ardizzoni, Luca Consolini, Marco Locatelli
https://arxiv.org/abs/2403.18561

A Dynamic Programming Approach for Road Traffic Estimation
We consider a road network represented by a directed graph. We assume to collect many measurements of traffic flows on all the network arcs, or on a subset of them. We assume that the users are divided into different groups. Each group follows a different path. The flows of all user groups are modeled as a set of independent Poisson processes. Our focus is estimating the paths followed by each user group, and the means of the associated Poisson processes. We present a possible solution based on…

@arXiv_eessSP_bot@mastoxiv.page
2024-03-28 07:25:53

On the Statistical Analysis of the Multipath Propagation Model Parameters for Power Line Communications
Alberto Pittolo, Irene Povedano, Jos\'e A. Cort\'es, Francisco J. Ca\~nete, Andrea M. Tonello
https://arxiv.org/abs/2403.18129

On the Statistical Analysis of the Multipath Propagation Model Parameters for Power Line Communications
This paper proposes a fitting procedure that aims to identify the statistical properties of the parameters that describe the most widely known multipath propagation model (MPM) used in power line communication (PLC). Firstly, the MPM parameters are computed by fitting the theoretical model to a large database of single-input-single-output (SISO) experimental measurements, carried out in typical home premises. Secondly, the determined parameters are substituted back into the MPM formulation with…

@arXiv_astrophHE_bot@mastoxiv.page
2024-03-26 07:14:55

Symmetry breaking due to multi-angle matter-neutrino resonance in neutron star merger remnants
Ian Padilla-Gay, Shashank Shalgar, Irene Tamborra
https://arxiv.org/abs/2403.15532 <…

Symmetry breaking due to multi-angle matter-neutrino resonance in neutron star merger remnants
Neutron star merger remnants are unique sites for exploring neutrino flavor conversion in dense media. Because of the natural excess of $\barν_e$ over $ν_e$, the neutrino-neutrino potential can cancel the matter potential, giving rise to matter-neutrino resonant flavor conversion. Under the assumption of two (anti)neutrino flavors and spatial homogeneity, we solve the neutrino quantum kinetic equations to investigate the occurrence of the matter-neutrino resonance within a multi-angle framewo…

@BBC2MusicBot@mastodonapp.uk
2024-03-18 14:28:17

🔊 #NowPlaying on BBCRadio2's #ScottMills
Irene Cara:
🎵 Flashdance... What a Feeling
#IreneCara
https://open.spotify.com/track/3cbV252akVZInSvJk7jAYX
https://opaledit.bandcamp.com/track/irene-cara-flashdance-what-a-feeling

@arXiv_quantph_bot@mastoxiv.page
2024-03-19 07:21:46

All-thermal reversal of heat currents using qutrits
Irene Ada Picatoste, Rafael S\'anchez
https://arxiv.org/abs/2403.11160 https://

All-thermal reversal of heat currents using qutrits
Few-level systems coupled to thermal baths provide useful models for quantum thermodynamics and the role of heat currents in quantum information settings. Useful operations such as cooling or thermal masers have been proposed in autonomous three-level systems. In this work, we propose the coherent coupling of two qutrits as a simultaneous refrigerator and heat pump of two reservoirs forming a system. This occurs thanks to the coupling to two other reservoirs which are out of equilibrium but do …

@arXiv_astrophIM_bot@mastoxiv.page
2024-02-27 07:33:37

Improving Photometric Redshift Estimates with Training Sample Augmentation
Irene Moskowitz, Eric Gawiser, John Franklin Crenshaw, Brett H. Andrews, Samuel Schmidt, The LSST Dark Energy Science Collaboration
https://arxiv.org/abs/2402.15551

Improving Photometric Redshift Estimates with Training Sample Augmentation
Large imaging surveys will rely on photometric redshifts (photo-$z$'s), which are typically estimated through machine learning methods. Currently planned spectroscopic surveys will not be deep enough to produce a representative training sample for LSST, so we seek methods to improve the photo-z estimates from non-representative training samples. Spectroscopic training samples for photo-z's are biased towards redder, brighter galaxies, which also tend to be at lower redshift than the typical gal…

@arXiv_csCG_bot@mastoxiv.page
2024-02-23 06:47:33

On $k$-Plane Insertion into Plane Drawings
Julia Katheder, Philipp Kindermann, Fabian Klute, Irene Parada, Ignaz Rutter
https://arxiv.org/abs/2402.14552 ht…

On $k$-Plane Insertion into Plane Drawings
We introduce the $k$-Plane Insertion into Plane drawing ($k$-PIP) problem: given a plane drawing of a planar graph $G$ and a set of edges $F$, insert the edges in $F$ into the drawing such that the resulting drawing is $k$-plane. In this paper, we focus on the $1$-PIP scenario. We present a linear-time algorithm for the case that $G$ is a triangulation, while proving NP-completeness for the case that $G$ is biconnected and $F$ forms a path or a matching.

@arXiv_heplat_bot@mastoxiv.page
2024-02-29 07:02:13

Real-time scattering in the lattice Schwinger model
Irene Papaefstathiou, Johannes Knolle, Mari Carmen Ba\~nuls
https://arxiv.org/abs/2402.18429 https://…

Real-time scattering in the lattice Schwinger model
Tensor network methods have demonstrated their suitability for the study of equilibrium properties of lattice gauge theories, even close to the continuum limit. We use them in an out-of-equilibrium scenario, much less explored so far, by simulating the real-time collisions of composite mesons in the lattice Schwinger model. Constructing wave-packets of vector mesons at different incoming momenta, we observe the opening of the inelastic channel in which two heavier mesons are produced and identi…

@arXiv_econEM_bot@mastoxiv.page
2024-03-25 06:53:13

Fast TTC Computation
Irene Aldridge
https://arxiv.org/abs/2403.15111 https://arxiv.org/pdf/2403.15111<…

Fast TTC Computation
This paper proposes a fast Markov Matrix-based methodology for computing Top Trading Cycles (TTC) that delivers O(1) computational speed, that is speed independent of the number of agents and objects in the system. The proposed methodology is well suited for complex large-dimensional problems like housing choice. The methodology retains all the properties of TTC, namely, Pareto-efficiency, individual rationality and strategy-proofness.

@arXiv_astrophGA_bot@mastoxiv.page
2024-04-30 07:17:36

A First Look at Spatially Resolved Star Formation at $4.8<z<6.5$ with JWST FRESCO NIRCam Slitless Spectroscopy
Jasleen Matharu, Erica J. Nelson, Gabriel Brammer, Pascal A. Oesch, Natalie Allen, Irene Shivaei, Rohan P. Naidu, John Chisholm, Alba Covelo-Paz, Yoshinobu Fudamoto, Emma Giovinazzo, Thomas Herard-Demanche, Josephine Kerutt, Ivan Kramarenko, Danilo Marchesini, Romain A. Meyer, Gonzalo Prieto-Lyon, Naveen Reddy, Marko Shuntov, Andrea Weibel, Stijn Wuyts, Mengyuan Xiao

A First Look at Spatially Resolved Star Formation at $4.8
We present the first results on the spatial distribution of star formation in 454 star-forming galaxies at $4.8

@arXiv_mathPR_bot@mastoxiv.page
2024-04-18 06:58:29

Non-linear conductances of Galton-Watson trees and application to the (near) critical random cluster model
Irene Ayuso Ventura, Quentin Berger
https://arxiv.org/abs/2404.11564

Non-linear conductances of Galton-Watson trees and application to the (near) critical random cluster model
When considering statistical mechanics models on trees, such that the Ising model, percolation, or more generally the random cluster model, some concave tree recursions naturally emerge. Some of these recursions can be compared with non-linear conductances, or $p$-conductances, between the root and the leaves of the tree. In this article, we estimate the $p$-conductances of $T_n$, a supercritical Galton-Watson tree of depth $n$, for any $p>1$ (for a quenched realization of $T_n$). In particular…

@arXiv_mathDG_bot@mastoxiv.page
2024-02-13 13:29:22

Invariant $\lambda$-translators in Lorentz-Minkowski space
Antonio Bueno, Irene Ortiz
https://arxiv.org/abs/2402.07237 https://arxiv.…

Invariant $λ$-translators in Lorentz-Minkowski space
Given $λ\in\mathbb{R}$ and $\textbf{v}\in\mathbb{L}^3$, a $λ$-translator with velocity $\textbf{v}$ is an immersed surface in $\mathbb{L}^3$ whose mean curvature satisfies $H=\langle N,\textbf{v}\rangle+λ$, where $N$ is a unit normal vector field. When $λ=0$, we fall into the class of translating solitons of the mean curvature flow. In this paper we study $λ$-translators in $\mathbb{L}^3$ that are invariant under a 1-parameter group of translations and rotations. The former are cylindrical…

@arXiv_astrophIM_bot@mastoxiv.page
2024-02-27 07:33:37

Improving Photometric Redshift Estimates with Training Sample Augmentation
Irene Moskowitz, Eric Gawiser, John Franklin Crenshaw, Brett H. Andrews, Samuel Schmidt, The LSST Dark Energy Science Collaboration
https://arxiv.org/abs/2402.15551

Improving Photometric Redshift Estimates with Training Sample Augmentation
Large imaging surveys will rely on photometric redshifts (photo-$z$'s), which are typically estimated through machine learning methods. Currently planned spectroscopic surveys will not be deep enough to produce a representative training sample for LSST, so we seek methods to improve the photo-z estimates from non-representative training samples. Spectroscopic training samples for photo-z's are biased towards redder, brighter galaxies, which also tend to be at lower redshift than the typical gal…

@arXiv_statME_bot@mastoxiv.page
2024-04-11 07:11:07

High-dimensional copula-based Wasserstein dependence
Steven De Keyser, Irene Gijbels
https://arxiv.org/abs/2404.07141 https://arxiv.o…

High-dimensional copula-based Wasserstein dependence
We generalize 2-Wasserstein dependence coefficients to measure dependence between a finite number of random vectors. This generalization includes theoretical properties, and in particular focuses on an interpretation of maximal dependence and an asymptotic normality result for a proposed semi-parametric estimator under a Gaussian copula assumption. In addition, we discuss general axioms for dependence measures between multiple random vectors, other plausible normalizations, and various examples…

@arXiv_condmatmtrlsci_bot@mastoxiv.page
2024-02-13 13:02:54

Temperature dependence of the Raman spectrum of orthorhombic Bi2Se3
Irene Mediavilla-Martinez, Christian Kramberger, Shabnam Dadgostar, Juan Jimenez, Paola Ayala, Thomas Pichler, Francisco J. Manjon, Placida Rodriguez-Hernandez, Alfonso Mu\~noz, Nadezhda Serebryanaya, Sergei Buga, Jorge Serrano
https://arxiv.org/abs/2402.07256…

Temperature dependence of the Raman spectrum of orthorhombic Bi2Se3
Bismuth selenide, a benchmark topological insulator, grows in a trigonal structure at ambient conditions and exhibits a number of enticing properties related to the formation of Dirac surface states. Besides this polytype, a metastable orthorhombic modification with Pnma space group has been produced by electrodeposition and high-pressure high-temperature synthesis displaying upon Sb doping significant thermoelectric properties in the midtemperature range. However, very little experimental info…

@arXiv_physicsappph_bot@mastoxiv.page
2024-04-26 07:33:15

In Situ Characterisation of Graphene Growth on Liquid Copper-Gallium Alloys: Paving the Path for Cost-Effective Synthesis
Valentina Rein, Florian Letellier, Maciej Jankowski, Marc de Voogd, Mahesh Prabhu, Lipeng Yao, Gertjan van Baarle, Gilles Renaud, Mehdi Saedi, Irene M. N. Groot, Oleg V. Konovalov
https://arxiv.org/abs/2404.1…

In Situ Characterisation of Graphene Growth on Liquid Copper-Gallium Alloys: Paving the Path for Cost-Effective Synthesis
Liquid metal catalysts (LMCats), primarily molten copper, have demonstrated their efficiency in the chemical vapour deposition (CVD) approach for synthesising high-quality, large-area graphene. However, their high melting temperatures limit broader applications. Reducing the temperature of graphene production on LMCats would lead to a more efficient and cost-effective process. Here, we investigated the effects of alloying copper with a low-melting temperature metal on graphene growth in real-ti…

@arXiv_condmatstatmech_bot@mastoxiv.page
2024-03-13 07:22:49

Discrete Laplacian thermostat for flocks and swarms: the fully conserved Inertial Spin Model
Andrea Cavagna, Javier Crist\'in, Irene Giardina, Tomas S. Grigera, Mario Veca
https://arxiv.org/abs/2403.07644

Discrete Laplacian thermostat for flocks and swarms: the fully conserved Inertial Spin Model
Experiments on bird flocks and midge swarms reveal that these natural systems are well described by an active theory in which conservation laws play a crucial role. By building a symplectic structure that couples the particles' velocities to the generator of their internal rotations (spin), the Inertial Spin Model (ISM) reinstates a second-order temporal dynamics that captures many phenomenological traits of flocks and swarms. The reversible structure of the ISM predicts that the total spin is …

@arXiv_csCG_bot@mastoxiv.page
2024-02-21 06:47:35

Barking dogs: A Fr\'echet distance variant for detour detection
Ivor van der Hoog, Fabian Klute, Irene Parada, Patrick Schnider
https://arxiv.org/abs/2402.13159

Barking dogs: A Fréchet distance variant for detour detection
Imagine you are a dog behind a fence $Q$ and a hiker is passing by at constant speed along the hiking path $P$. In order to fulfil your duties as a watchdog, you desire to bark as long as possible at the human. However, your barks can only be heard in a fixed radius $ρ$ and, as a dog, you have bounded speed $s$. Can you optimize your route along the fence $Q$ in order to maximize the barking time with radius $ρ$, assuming you can run backwards and forward at speed at most $s$? We define the…

@arXiv_physicsmedph_bot@mastoxiv.page
2024-04-24 07:13:58

Investigating the missing wedge problem in small-angle x-ray scattering tensor tomography across real and reciprocal space
Leonard C. Nielsen, Torne T\"anzer, Irene Rodriguez-Fernandez, Paul Erhart, Marianne Liebi
https://arxiv.org/abs/2404.14540

Investigating the missing wedge problem in small-angle x-ray scattering tensor tomography across real and reciprocal space
Small-angle scattering tensor tomography is a technique for studying anisotropic nanostructures of millimeter-sized samples in a volume-resolved manner. It requires the acquisition of data through repeated tomographic rotations about an axis which is subjected to a series of tilts. The tilt that can be achieved with a typical setup is geometrically constrained, which leads to limits in the set of directions from which the different parts of the reciprocal-space map can be probed. Here, we chara…

@BBC6MusicBot@mastodonapp.uk
2024-03-21 23:57:08

🔊 #NowPlaying on #BBC6Music's #JamzSupernovasGlobalSounds
Irene Martínez:
🎵 Se Va Se Va
#IreneMartínez
https://open.spotify.com/track/1PZWA7B7HsRPNTTSox5ate

@arXiv_physicsoptics_bot@mastoxiv.page
2024-02-22 07:07:02

Low-loss directional coupler for the C, L and U bands based on subwavelength gratings
Jaime Vilas, Raquel Fern\'andez De Cabo, Irene Olivares, David Gonz\'alez-Andrade, Aitor V. Velasco, Antonio Dias-Ponte
https://arxiv.org/abs/2402.13836

Low-loss directional coupler for the C, L and U bands based on subwavelength gratings
Directional couplers are ubiquitous components for power distribution in silicon photonics integrated circuits. Despite significant advances in their performance, architectures providing tailorable coupling ratios over increasingly broad bandwidths are still sought after. Compact footprint and low losses are also essential features for circuits comprising multiple coupling stages. In this work, we propose a compact directional coupler with arbitrary coupling ratio, based on dispersion engineeri…

@arXiv_physicschemph_bot@mastoxiv.page
2024-02-19 07:14:21

Live magnetic observation of parahydrogen hyperpolarization dynamics
James Eills, Morgan W. Mitchell, Irene Marco Rius, Michael C. D. Tayler
https://arxiv.org/abs/2402.10766

Live magnetic observation of parahydrogen hyperpolarization dynamics
Nuclear spin hyperpolarization is used in physics, chemistry, and medicine to produce strong magnetization unachievable by equilibrium polarization techniques. Hyperpolarization enables magnetic resonance spectroscopy and imaging with minute samples, and is used to produce MRI spin-tracers and polarized physics targets. Although widely used, the dynamics of the hyperpolarization process have never been studied `live' due to the extremely low (Hz-band) frequencies involved, and/or detector satur…

@arXiv_astrophIM_bot@mastoxiv.page
2024-03-26 07:00:22

JWST MIRI Flight Performance: Imaging
Dan Dicken, Macarena Garc\'ia Mar\'in, Irene Shivaei, Pierre Guillard, Mattia Libralato, Alistair Glasse, Karl D. Gordon, Christophe Cossou, Patrick Kavanagh, Tea Temim, Nicolas Flagey, Pamela Klaassen, George H. Rieke, Gillian Wright, Stacey Alberts, Ruyman Azzollini, Javier \'Alvarez-M\'arquez, Patrice Bouchet, Stacey Bright, Misty Cracraft, Alain Coulais, Ors Hunor Detre, Mike Engesser, Ori D. Fox, Andras Gaspar, Ren\'e Gasta…

JWST MIRI Flight Performance: Imaging
The Mid-Infrared Instrument (MIRI) aboard the James Webb Space Telescope (JWST) provides the observatory with a huge advance in mid-infrared imaging and spectroscopy covering the wavelength range of 5 to 28 microns. This paper describes the performance and characteristics of the MIRI imager as understood during observatory commissioning activities, and through its first year of science operations. We discuss the measurements and results of the imager's point spread function, flux calibration, b…

@arXiv_csCG_bot@mastoxiv.page
2024-02-20 06:47:34

The Complexity of Geodesic Spanners using Steiner Points
Sarita de Berg, Tim Ophelders, Irene Parada, Frank Staals, Jules Wulms
https://arxiv.org/abs/2402.12110

The Complexity of Geodesic Spanners using Steiner Points
A geometric $t$-spanner $\mathcal{G}$ on a set $S$ of $n$ point sites in a metric space $P$ is a subgraph of the complete graph on $S$ such that for every pair of sites $p,q$ the distance in $\mathcal{G}$ is a most $t$ times the distance $d(p,q)$ in $P$. We call a connection between two sites in the spanner a link. In some settings, such as when $P$ is a simple polygon with $m$ vertices and a link is a shortest path in $P$, links can consist of $Θ(m)$ segments and thus have non-constant comple…

@arXiv_astrophGA_bot@mastoxiv.page
2024-04-23 06:59:41

The Lockman--SpReSO project. Main properties of infrared selected star-forming galaxies
Mauro Gonz\'alez-Otero, Jordi Cepa, Carmen P. Padilla-Torres, Maritza A. Lara-L\'opez, J. Jes\'us Gonz\'alez, \'Angel Bongiovanni, Bernab\'e Cedr\'es, Miguel Cervi\~no, Irene Cruz-Gonz\'alez, Mauricio El\'ias-Ch\'avez, Mart\'in Herrera-Edoqui, H\'ector J. Ibarra-Medel, Yair Krongold, Jakub Nadolny, C. Alenka Negrete, Ana Mar\'ia P\'erez Garc\…

The Lockman--SpReSO project. Main properties of infrared selected star-forming galaxies
Methods.We applied distinct selection criteria to attain an SFG sample with minimal AGN contamination. Multiple approaches were used to estimate the intrinsic extinction, SFR and gas-phase metallicity for the SFGs. In conjunction with findings in the literature, we examined the correlation between SFRs and stellar masses ($M_*$), as well as the metallicity evolution depending on $M_*$. Finally, the 3D relationship between $M_*$, SFR and metallicity, is also studied.} Results. From the initial s…

@kexpmusicbot@mastodonapp.uk
2024-03-29 11:10:19

🔊 #NowPlaying on KEXP's #VarietyMix
Shabazz Palaces feat. Stas THEE Boss & Irene Barber:
🎵 Angela
#ShabazzPalaces #StasTHEEBoss #IreneBarber
https://open.spotify.com/track/36TkDjlOyExWGWpeThOgsx
https://shabazzpalaces.bandcamp.com/track/angela

@arXiv_astrophGA_bot@mastoxiv.page
2024-04-18 07:28:43

FRESCO: The Paschen-$\alpha$ Star Forming Sequence at Cosmic Noon
Chloe Neufeld, Pieter van Dokkum, Yasmeen Asali, Alba Covelo-Paz, Joel Leja, Jamie Lin, Jorryt Matthee, Pascal A. Oesch, Naveen A. Reddy, Irene Shivaei, Katherine E. Whitaker, Stijn Wuyts, Gabriel Brammer, Danilo Marchesini, Michael V. Maseda, Rohan P. Naidu, Erica J. Nelson, Anna Velichko, Andrea Weibel, Mengyuan Xiao

FRESCO: The Paschen-$α$ Star Forming Sequence at Cosmic Noon
We present results from the JWST First Reionization Epoch Spectroscopically Complete Observations survey (FRESCO) on the star forming sequence of galaxies at $1.09.5 M_\odot$ that are lower than found in many…

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