Tootfinder

This fourth of July, as we shoot off fireworks or enjoy time with our own families, we think of people across the country who have been taken from theirs. Share these ads to demand an end to the abductions.
#FreeAmerica #EndtheAbductions

Open Problems in Computability Theory and Descriptive Set Theory
George Barmpalias, Nikolay Bazhenov, Chi Tat Chong, Wei Dai, Su Gao, Jun Le Goh, Jialiang He, Keng Meng Selwyn Ng, Andre Nies, Theodore Slaman, Riley Thornton, Wei Wang, Jing Yu, Liang Yu
https://arxiv.org/abs/2507.03972

Open Problems in Computability Theory and Descriptive Set Theory
These open problems were presented in the Problem Sessions held during the Tianyuan Workshop on Computability Theory and Descriptive Set Theory, June 16-20, 2025. The problems are organized into sections named after their contributors, in the order of their presentations during the workshop. Notes were taken and compiled by Wei Dai, Feng Li, Ruiwen Li, Ming Xiao, Xu Wang, Víctor Hugo Yañez Salazar, and Yang Zheng.

Next Generation Authentication for Data Spaces: An Authentication Flow Based On Grant Negotiation And Authorization Protocol For Verifiable Presentations (GNAP4VP)
Rodrigo Men\'endez, Andres Munoz-Arcentales, Joaqu\'in Salvach\'ua, Carlos Aparicio, Irene Plaza, Gabriel Huecas
https://arxiv.org/abs/2505.24698

Next Generation Authentication for Data Spaces: An Authentication Flow Based On Grant Negotiation And Authorization Protocol For Verifiable Presentations (GNAP4VP)
Identity verification in Data Spaces is a fundamental aspect of ensuring security and privacy in digital environments. This paper presents an identity verification protocol tailored for shared data environments within Data Spaces. This protocol extends the Grant Negotiation and Authorization Protocol (GNAP) and integrates OpenID Connect for Verifiable Presentations (OIDC4VP) along with support for Linked Verifiable Presentations (LVP), providing a robust foundation for secure and privacy-preser…

What's a good number of presentations to fit in a conference day?
NIME (a single-track conference with low acceptance rate), fits in about 14 presentations of various lengths (all pretty darn short - 5, 10, or 15 mins), amongst a couple of other sessions. They have 5 papers per 90 minute session. https://nime2025.org/program/

Freedom means having your family home safe and sound. This 4th of July, we’re demanding an end to the abductions to keep our families whole.
#FreeAmerica #EndtheAbductions

Since migrating away from big tech platforms (including Google Drive) I have been using Libreoffice for my writing and presentations.
I often get asked why I do not use OnlyOffice since it looks so much better (especially the web client). Two answers:
- The presentation tools of OnlyOffice are too barebones
But more importantly:
OnlyOffice is a company that seems to be controlled by a Russian guy who invests a lot of time to hide the fact that OnlyOffice is Russian (see…

Comparing Collabora with OnlyOffice
Collabora Online provides excellent interoperabilty, efficient backend for scalability, best privacy, and a rich interface for cooperation and editing docx, xlsx, pptx and odf

QGIS User Conf 2025 videos have landed!
The #QGISUC2025 team has done an awesome job recording and editing the conference presentations ...
http://anitagraser.com/2025/06/25/qgi

QGIS User Conf 2025 videos have landed!
The QGISUC2025 team has done an awesome job recording and editing the conference presentations. All “presentation” type talks where the presenter has accepted to be published are now av…

from my link log —
Phil Rogaway on radical computer science.
https://csrc.nist.gov/Presentations/2023/radical-cs
saved 2025-01-14

Learning to Rank with Variable Result Presentation Lengths
Norman Knyazev, Harrie Oosterhuis
https://arxiv.org/abs/2506.23319 https://

Learning to Rank with Variable Result Presentation Lengths
Learning to Rank (LTR) methods generally assume that each document in a top-K ranking is presented in an equal format. However, previous work has shown that users' perceptions of relevance can be changed by varying presentations, i.e., allocating more vertical space to some documents to provide additional textual or image information. Furthermore, presentation length can also redirect attention, as users are more likely to notice longer presentations when scrolling through results. Deciding on …

Perturbation Effects on Word Lengths in Three-Reflection Symmetric Presentations of Dihedral Groups
Michael Allocca, Max Trimmer
https://arxiv.org/abs/2506.19216

Perturbation Effects on Word Lengths in Three-Reflection Symmetric Presentations of Dihedral Groups
We investigate the properties of word lengths of elements from a three-reflection symmetric generating set of the dihedral group $D_n$. More specifically, we provide upper bounds for a quantity $λ_1$, which measures the stability of a group under perturbations in the words corresponding to certain elements with respect to specific presentations.

I am seeking speakers for my @… & @… meetups. We prefer in-person presentations in Frankfurt or the Mannheim area, but remote talks are also an option.
If you have anything interesting to share with us, let us know. We'd be …

After the whole "I asked ChatGPT" as talk opener I've recently seen a lot of "Look, my kids are using AI to build their own games and that's beautiful" stuff in presentations.
Makes me sad that instead of wanting kids to learn how to build something they get taught to accept what the kinda-passable code generator craps out. What they learn is not how to conceptualize or build something, what they learn is that shit comes from nowhere if you just match your e…

Kleines #Kahoot Quiz zu #Pfingsten für meine Grundschüler Kl. 4, vielleicht kann es jemand brauchen ...
https://

#DH2025 listening to Taylor Marie Faires on UChicago’s Library and Emerging Technologies 2 day bootcamp-style Summer Camp - they had 'share out' sessions including 'scary stories' which allowed people to share their fears about technology

Excited to join the Instructional Design AI special interest group in a fast-paced “Lightning Round” session Thursday 3pm EDT, where I'll show how to get students thinking about AI's environmental footprint by comparing its impacts to other activities https://osu.zoom.us/meeting/register/X

Upcoming GÉANT infoshare - Part 2 🚀
🔐 Quantum KMS Architectures and Services
This session will explore the key aspects of Key Management Systems (KMS) in enabling secure, scalable Quantum Key Distribution. Gain insights on architecture, standardisation, and integration—from both research and industry voices.
🔗 Sign up here: https://

Infoshare: Quantum KMS Architectures and Services
The infoshare will focus on the aspects of Key Management Systems (KMS) for Quantum Key Distribution systems. KMS is a crucial component that allows to build, manage, scale QKD networks, define the interfaces for key delivery. The presentations will show KMS architectures, standardization, integration examples and strategies. KMS technologies are integral part of EuroQCI infrastructure and interconnectivity. The presentations will be provided by research institutions and also companies.The...

This https://arxiv.org/abs/2504.19618 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On monoids of monotone partial transformations of a finite chain whose domains and ranges are intervals
In this note, we consider the monoid $\mathcal{PIM}_{n}$ of all partial monotone transformations on a chain with $n$ elements whose domains and ranges are intervals and its submonoid $\mathcal{IM}_{n}$ constituted by the full transformations. For both of these monoids, our aim is to determine their cardinalities and ranks and define them by means of presentations. We also calculate the number of nilpotent elements of $\mathcal{PIM}_{n}$.

My pet peeve in student (or generally academic) presentations: Distorted images. It’s not that difficult to keep the aspect ratio when resizing images, is it?! Don’t they see it or don’t they care? 🧐

Here's the #CFP for the 2025 #ICS #Cybersecurity Conference. The conference is Oct 27-30 at InterContinental Buckhead Atlanta.

2025 ICS Cybersecurity Conference: Call for Presentations
About the Conference - Know Your AudienceSecurityWeek’s ICS Cybersecurity Conference is the conference where ICS users, ICS vendors, system security p...

#bibliocon25: Heute gegen 14:00 Uhr präsentieren @… und ich das metadaten.community-Forum in Halle 4.1/ Raum III in der Sitzung "Entschlossen zur Vernetzung".
#Metadaten

Multi-Agent Synergy-Driven Iterative Visual Narrative Synthesis
Wang Xi, Quan Shi, Tian Yu, Yujie Peng, Jiayi Sun, Mengxing Ren, Zenghui Ding, Ningguang Yao
https://arxiv.org/abs/2507.13285

Multi-Agent Synergy-Driven Iterative Visual Narrative Synthesis
Automated generation of high-quality media presentations is challenging, requiring robust content extraction, narrative planning, visual design, and overall quality optimization. Existing methods often produce presentations with logical inconsistencies and suboptimal layouts, thereby struggling to meet professional standards. To address these challenges, we introduce RCPS (Reflective Coherent Presentation Synthesis), a novel framework integrating three key components: (1) Deep Structured Narrat…

Weakly $G$-slim complexes and the non-positive immersion property for generalized Wirtinger presentations
Agust\'in Nicol\'as Barreto, Elias Gabriel Minian
https://arxiv.org/abs/2506.19105

Weakly $G$-slim complexes and the non-positive immersion property for generalized Wirtinger presentations
We investigate weakly $G$-slim complexes, a more flexible variant of Helfer and Wise's slim complexes, which can be defined on any regular $G$-covering. We prove that if a $2$-complex $X$ associated to a group presentation is weakly $H$-slim for some regular $H$-covering, and $π_1X$ is left-orderable, then $X$ is slim and, in particular, it has non-positive immersions. We apply this result to study conditions on generalized Wirtinger presentations that guarantee the non-positive immersion prop…

Dynamite: Real-Time Debriefing Slide Authoring through AI-Enhanced Multimodal Interaction
Panayu Keelawat, David Barron, Kaushik Narasimhan, Daniel Manesh, Xiaohang Tang, Xi Chen, Sang Won Lee, Yan Chen
https://arxiv.org/abs/2507.20137

Dynamite: Real-Time Debriefing Slide Authoring through AI-Enhanced Multimodal Interaction
Facilitating class-wide debriefings after small-group discussions is a common strategy in ethics education. Instructor interviews revealed that effective debriefings should highlight frequently discussed themes and surface underrepresented viewpoints, making accurate representations of insight occurrence essential. Yet authoring presentations in real time is cognitively overwhelming due to the volume of data and tight time constraints. We present Dynamite, an AI-assisted system that enables sem…

Interesting project presentations this morning in the special session on digital technology at #IANLS25 : Malika Bastin-Hammou presented the database of 16th century paratexts of ancient drama: https://ithac.elan-numerique.fr

The presentations at the 2nd #AAS246 presser were about the papers https://iopscience.iop.org/article/10.3847/2041-8213/adc911 (Discovery of the Seven-ring Polycyclic Aromatic Hydrocarbon Cyanocoronene (C24H11CN) in GOTHAM Observations of TMC-1, also https://public.nrao.edu/news/cosmic-chemistry-breakthrough-largest-aromatic-molecule-found-in-deep-space/), https://arxiv.org/abs/2506.05575 (A map of the outer gas disk of the Galaxy with direct distances from young stars, also https://www.uah.edu/news/items/uah-researcher-unveils-new-map-of-milky-way-galaxy-in-atomic-hydrogen-revealing-its-clumped-flocculent-nature-for-first-time) and https://iopscience.iop.org/article/10.3847/1538-4357/adbbd9 (Surveying the Giant H ii Regions of the Milky Way with SOFIA. VII. Galactic Center Regions Sgr B1, Sgr B2, and Sgr C, also https://www.seti.org/press-release/unusual-stellar-nurseries-near-our-galaxys-center-puzzle-scientists) plus two results with apparently neither papers nor press releases going with them.

I am seeking speakers for my @… & @… meetups. We prefer in-person presentations in Frankfurt or the Mannheim area, but remote talks are also an option.
If you have anything interesting to share with us, let us know. We'd be …

We've added our reviewing criteria to our Frequently Asked Questions on the #AI4LAM #FF2025 Fantastic Futures 2025 conference page https:/…

ai4lam - Fantastic Futures 2025
Call for Proposals AI Everywhere, All at Once AI4LAM’s annual conference, December 3 – 5, 2025, British Library, London The British Library and the Programme Committee for the Fantastic Futures 2025 conference are delighted to invite proposals for presentations and workshops. Submissions are

As for the youth, of which I tend to think of these games as sales presentations for loans, they were good.
At 16, Ngumoha really looks like an up and comer. He's patient mostly, but quite direct as well.
I liked Nyoni last year and I liked him yesterday. He wasn't flashy, but he always made the right decision at the right time.
Stephenson was good in the middle. I think he looked a bit nervous on the ball, but made no real mistakes. Good performance.
4/n

In my #AcademicSkills course, I also cover presentation techniques, as everyone suffers from bad classroom presentations. To have some actual practice, in one session we have a #PechaKucha slam. I first learned about the format through the legendary

That event also has talks about #OpenRV and the mysterious #XStudio amongst many other VFX pipeline tools. Even about recommendations for h264 encoding of video clips you want to send somebody for review.
#VFX

Everything is #virtiomsg. Spent most of this morning's #linaroconnect2025 discussing how helpful #qemu is for pre-silicon bring up followed by back to back presentations on the new proposed…

from my link log —
Posit floating point numbers: thin triangles and other tricks.
http://marc-b-reynolds.github.io/math/2019/02/06/Posit1.html
saved 2025-06-18

I am seeking speakers for my @… & @… meetups. We prefer in-person presentations in Frankfurt or the Mannheim area, but remote talks are also an option.
If you have anything interesting to share with us, let us know. We'd be …

Groups admitting Wirtinger presentations and Gromov hyperbolic groups
Toshiyuki Akita
https://arxiv.org/abs/2506.07143 https://arxiv.…

Groups admitting Wirtinger presentations and Gromov hyperbolic groups
Twisted Wirtinger presentations are generalizations of the classical Wirtinger presentations of knot and link groups. In this paper, we prove that if a finitely generated group admitting a twisted Wirtinger presentation is Gromov hyperbolic, then its second rational homology group vanishes. Moreover, if the group is torsion-free, then its second integral homology group also vanishes.

At first I thought "wow, there's a #privacy event in #Vilnius but then I read the post.

Computable presentations of randomizations
Nicol\'as Cuervo Ovalle, Isaac Goldbring
https://arxiv.org/abs/2506.06187 https://arxi…

Computable presentations of randomizations
We initiate the effective metric structure theory of Keisler randomizations. We show that a classical countable structure $\mathcal{M}$ has a decidable presentation if and only if its Borel randomization $\mathcal{M}^{[0,1)}$ has a computable presentation for which the constant functions are uniformly computable points. We determine a sufficient condition for which the uniform computability of the constant functions can be dropped. We show that when $\mathcal{M}$ is effectively $ω$-categorical…

Presentations for semigroups of full-domain partitions
Luka Carroll, James East, Matthias Fresacher
https://arxiv.org/abs/2507.05497 https://

Presentations for semigroups of full-domain partitions
The full-domain partition monoid $P_n^{fd}$ has been discovered independently in two recent studies on connections between diagram monoids and category theory. It is a right restriction Ehresmann monoid, and contains both the full transformation monoid and the join semilattice of equivalence relations. In this paper we give presentations (by generators and relations) for $P_n^{fd}$, its singular ideal, and its planar submonoid. The latter is not an Ehresmann submonoid, but it is a so-called grr…

Here comes the next #AAS246 presser, number 3 of 5: https://www.youtube.com/watch?v=Z7niXAHqkLg. The topic is "Planets, Exoplanets, and Brown Dwarfs", and the presentations are https://aas.org/meetings/aas246/press-kit#Tue_am

Exotic presentations of quaternion groups and Wall's D2 problem
Tommy Hofmann, John Nicholson
https://arxiv.org/abs/2507.15999 https://arxiv.org/pdf/25…

Exotic presentations of quaternion groups and Wall's D2 problem
The D2 problem of C. T. C. Wall asks whether every finite cohomologically 2-dimensional CW-complex is homotopy equivalent to a finite 2-complex. Several potential counterexamples have been proposed, the longest standing of which is a CW-complex constructed by Cohen and Dyer whose fundamental group is a quaternion group of order 32. We show that this CW-complex is homotopy equivalent to the presentation 2-complex of a presentation constructed by Mannan-Popiel, thus showing it is not a counterexa…

This https://arxiv.org/abs/2406.19303 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Compatibility of Drinfeld presentations for split affine Kac-Moody quantum symmetric pairs
Let $(\mathbf{U}, \mathbf{U}^\imath)$ be a split affine quantum symmetric pair of type $\mathsf{B}_n^{(1)}, \mathsf{C}_n^{(1)}$ or $\mathsf{D}_n^{(1)}$. We prove factorization and coproduct formulae for the Drinfeld-Cartan operators $Θ_i(z)$ in the Lu-Wang Drinfeld-type presentation, generalizing the type $\mathsf{A}_n^{(1)}$ result from [Prz23]. As an application, we show that a boundary analogue of the $q$-character map, defined via the spectra of these operators, is compatible with the usua…

"Pairs and Squares" Periodic Table
Leonid A. Levin
https://arxiv.org/abs/2506.11247 https://arxiv.org/pdf/2506.11247…

"Pairs and Squares" Periodic Table
I present a new "Pairs and Squares" rendering of the Periodic Table. It takes advantage of the number of orbitals at each atomic energy level being a whole square. This makes the table very regular and intuitive in contrast with its currently used presentations.

AI-Reporter: A Path to a New Genre of Scientific Communication
Gerd Gra{\ss}hoff
https://arxiv.org/abs/2507.05903 https://arxiv.org/p…

AI-Reporter: A Path to a New Genre of Scientific Communication
The AI-Reporter represents a paradigmatic shift in scientific publication practice. This document demonstrates through a concrete case study how our system transforms academic presentations into publication-ready chapters -- in less than three minutes. Using Arno Simons' lecture on Large Language Models from the ``Large Language Models for the History, Philosophy, and Sociology of Science'' workshop (NEPI) as an example, we show how technological innovation bridges the gap between ephemeral pre…

Day 17
Not just code today.
Prepared a full-stack presentation (pitch − details − tech) to showcase company setup, platform progress, and team readiness. Also refined our internal documentation and SDLC overview.
Bonus: set up a self-hosted NextCloud for chat, tasks, calendars, forms, and shared folders.
Code matters, but so does clarity.

Hanf Locality and Invariant Elementary Definability
Steven Lindell, Henry Towsner, Scott Weinstein
https://arxiv.org/abs/2507.12450 https://arxiv.org/pdf/2…

Hanf Locality and Invariant Elementary Definability
We introduce some notions of invariant elementary definability which extend the notions of first-order order-invariant definability, and, more generally, definability invariant with respect to arbitrary numerical relations. In particular, we study invariance with respect to expansions which depend not only on (an ordering of) the universe of a structure, but also on the particular relations which determine the structure; we call such expansions \emph{presentations} of a structure. We establish …

On the Isoperimetric functions of a class of Artin Groups
Arye Juhasz
https://arxiv.org/abs/2507.16770 https://arxiv.org/pdf/2507.167…

On the Isoperimetric functions of a class of Artin Groups
We find a polynomial (n^6) isoperimetric function for Artin groups, the defining graph of which contains no edges labelled by 3. This in particular shows that even Artin groups have solvable word problem. We use small cancellation theory of relative extended presentations.

Replaced article(s) found for math.RA. https://arxiv.org/list/math.RA/new/
[1/1]:
Presentations for small reflection equation algebras of type A
h…

Maximal subgroups of free projection- and idempotent-generated semigroups with applications to partition monoids
James East, Robert D. Gray, P. A. Azeef Muhammed, Nik Ruskuc
https://arxiv.org/abs/2507.06600

Maximal subgroups of free projection- and idempotent-generated semigroups with applications to partition monoids
This paper investigates the maximal subgroups of a free projection-generated regular $*$-semigroup $PG(P)$ over a projection algebra $P$, and their relationship to the maximal subgroups of the free idempotent-generated semigroup $IG(E)$ over the corresponding biordered set $E = E(P)$. In the first part of the paper we obtain a number of general presentations by generators and defining relations, in each case reflecting salient combinatorial/topological properties of the groups. In the second pa…