Tootfinder

Today is the opening of a new exhibition in #Geneva aiming to take a critical look at cultural appropriation of artworks. Through the #GLAMhack cultural data hackathon, we supported some of the curation, and I look forward to the Vernissage 🛶
Mémoires | MEG

Mémoires | MEG
Mémoires Genève dans le monde colonial Musée d'ethnographie de Genève Exposition temporaire 3 mai 2024 - 5 janvier 2025

This https://arxiv.org/abs/2303.03765 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A survey of congruences and quotients of partially ordered sets
A quotient of a poset $P$ is a partial order obtained on the equivalence classes of an equivalence relation $θ$ on $P$; $θ$ is then called a congruence if it satisfies certain conditions, which vary according to different theories. The literature on congruences and quotients of partially ordered sets contains a large and profilerating array of approaches, but little in the way of systematic exposition and examination of the subject. We seek to rectify this by surveying the different theories …

This https://arxiv.org/abs/2312.08974 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Multifractal analysis via Lagrange duality
We provide a self-contained exposition of the well-known multifractal formalism for self-similar measures satisfying the strong separation condition. At the heart of our method lies a pair of quasiconvex optimization problems which encode the parametric geometry of the Lagrange dual associated with the constrained variational principle. We also give a direct derivation of the Hausdorff dimension of the level sets of the upper and lower local dimensions by exploiting certain weak uniformity prop…

Maximal Ideals in Commutative Rings and the Axiom of Choice
Alexei Entin
https://arxiv.org/abs/2404.18351 https://arxiv.org/pdf/2404.…

Maximal Ideals in Commutative Rings and the Axiom of Choice
It is well-known that within Zermelo-Fraenkel set theory (ZF), the Axiom of Choice (AC) implies the Maximal Ideal Theorem (MIT), namely that every commutative ring has a maximal ideal. The converse implication MIT $\Rightarrow$ AC was first proved by Hodges, with subsequent proofs given by Banaschewski and Erné. Here we give another derivation of MIT $\Rightarrow$ AC, aiming to make the exposition self-contained and accessible to non-experts with only introductory familiarity with commutativ…

Plaza de España in Seville (built 1928) for the Ibero-American Exposition. The color of the sky is influenced by Sahara dust - photo taken 2022.

This https://arxiv.org/abs/2402.02990 has been replaced.
link: https://scholar.google.com/scholar?q=a

Poisson-Lie analogues of spin Sutherland models revisited
Some generalizations of spin Sutherland models descend from `master integrable systems' living on Heisenberg doubles of compact semisimple Lie groups. The master systems represent Poisson--Lie counterparts of the systems of free motion modeled on the respective cotangent bundles and their reduction relies on taking quotient with respect to a suitable conjugation action of the compact Lie group. We present an enhanced exposition of the reductions and prove rigorously for the first time that the …

Interested in San Francisco history? In that case this might be of interest:
Join us in-person or online via Zoom Monday, March 11, 2024 for Empress San Francisco: The Pacific Rim, The Great West, and California at the Panama-Pacific International Exposition
6:00-7:15 PM, see registration links below.
Register to attend in-person:

Empress San Francisco: The Pacific Rim, The Great West, and California at the Panama-Pacific International Exposition
Monday, March 11, 2024 5:30 PM Pacific - Reception 6:00 PM Pacific - Program The Book Club of California | 312 Sutter Street | San Francisco, California 94108 When the more than 18 million visitors poured into the Panama-Pacific International Exposition (PPIE) in San Francisco in 1915, they encountered a vision of the world born out of San Francisco’s particular local political and social climate. By seeking to please various constituent groups ranging from the government of Japan…

Interested in San Francisco history? In that case this might be of interest:
Join us in-person or online via Zoom Monday, March 11, 2024 for Empress San Francisco: The Pacific Rim, The Great West, and California at the Panama-Pacific International Exposition
6:00-7:15 PM, see registration links below.
Register to attend in-person:

Empress San Francisco: The Pacific Rim, The Great West, and California at the Panama-Pacific International Exposition
Monday, March 11, 2024 5:30 PM Pacific - Reception 6:00 PM Pacific - Program The Book Club of California | 312 Sutter Street | San Francisco, California 94108 When the more than 18 million visitors poured into the Panama-Pacific International Exposition (PPIE) in San Francisco in 1915, they encountered a vision of the world born out of San Francisco’s particular local political and social climate. By seeking to please various constituent groups ranging from the government of Japan…

Selon vous cette idée est...
https://www.francetvinfo.fr/internet/najat-vallaud-belkacem-propose-de-rationner-internet-en-limitant-le-nombre-…

Najat Vallaud-Belkacem propose de "rationner internet" en limitant le nombre de "gigas à utiliser quotidiennem
L'ancienne ministre de l'Education nationale estime que réduire notre exposition aux écrans serait "bénéfique à bien des niveaux", notamment "pour lutter contre les discriminations, le harcèlement, le réchauffement climatique".

Remarks on $J$-tame inflation
Pranav Chakravarthy, Jordan Payette, Martin Pinsonnault
https://arxiv.org/abs/2403.19110 https://arxiv.…

Remarks on $J$-tame inflation
We give a complete and self-contained exposition of the $J$-tame inflation lemma: Given any tame almost complex structure $J$ on a symplectic $4$-manifold $(M,ω)$, and given any compact, embedded, $J$-holomorphic submanifold $Z$, it is always possible to construct a deformation of symplectic forms $ω_t$ in classes $[ω_t]=[ω]+t\mathrm{PD}{Z}$, for $0\leq t$ less than an upper bound $0

Motivated exposition of combinatorial Nullstellensatz
M. Lozhkin, A. Skopenkov
https://arxiv.org/abs/2404.10778 https://arxiv.org/pdf…

Motivated exposition of combinatorial Nullstellensatz
In this expository note we show how combinatorial Nullstellensatz by N. Alon naturally appears in solutions of elementary problems. Simple ideas gradually and naturally appear in such solutions, thus bringing a reader to generalizations. The note is accessible to mathematicians not specialized in the area, and to students familiar with polynomials.

Matern Correlation: A Panoramic Primer
Xiaoqing Chen
https://arxiv.org/abs/2404.11427 https://arxiv.org/pdf/2404.11427

Matern Correlation: A Panoramic Primer
Matern correlation is of pivotal importance in spatial statistics and machine learning. This paper serves as a panoramic primer for this correlation with an emphasis on the exposition of its changing behavior and smoothness properties in response to the change of its two parameters. Such exposition is achieved through a series of simulation studies, the use of an interactive 3D visualization applet, and a practical modeling example, all tailored for a wide-ranging statistical audience. Meanwhil…

Chain Bounding and the leanest proof of Zorn's lemma
Guillermo L. Incatasciato, Pedro S\'anchez Terraf
https://arxiv.org/abs/2404.11638 https://

Chain Bounding and the leanest proof of Zorn's lemma
We present an exposition of the *Chain Bounding Lemma*, which is a common generalization of both Zorn's Lemma and the Bourbaki-Witt fixed point theorem. The proofs of these results through the use of Chain Bounding are amongst the simplest ones that we are aware of. As a by-product, we show that for every poset $P$ and a function $f$ from the powerset of $P$ into $P$, there exists a maximal well-ordered chain whose family of initial segments is appropriately closed under $f$. We also provide …

Heute vor 14 Jahren: Am 23. April 2010 kam es zu einer Exposition eines Mitarbeiters während Reinigungsarbeiten des Brennstoffbeckens im Brennstoffgebäude des Chinon-KKW-Reaktors 4, als dieser ein hochradioaktives kleines Metallstück (Stückdurchmesser ca. 18 mm) fand.

This https://arxiv.org/abs/2203.07959 has been replaced.
link: https://scholar.google.com/scholar?q=a

Coorbit spaces associated to quasi-Banach function spaces and their molecular decomposition
This paper provides a self-contained exposition of coorbit spaces associated to integrable group representations and quasi-Banach function spaces, and at the same time extends and simplifies previous work. The main results provide an extension of the theory in [Studia Math., 180(3):237-253, 2007] from groups admitting a compact, conjugation-invariant unit neighborhood to arbitrary (possibly nonunimodular) locally compact groups. In addition, the present paper establishes the existence of molecu…

This https://arxiv.org/abs/2401.07486 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A derivation of first variation formulas from the strain-displacement relations in thin shell theory
In this paper, we derive the first variation formulas for surfaces in 3-dimensional Euclidean space by using the ``strain-displacement relations'' known in thin shell theory. For applications to architectural surface design, we focus on the objective function which has linear Weingarten surfaces as stationary points. This article aims to provide an elementary and cross-disciplinary exposition for applications without any tensor calculus, and thus, we do not give any new mathematical results.

I had forgotten what a horrific experience watching “Criminal Minds: Beyond Borders” is. Ignoring the “AMERICA RA RA RA” xenophobia running through every episode, the pithy quote at the beginning is cringe-inducing, the dialogue is extremely Dan Brown, you’ll get concussion from the Exposition Hammers™ and the whole thing reeks of a bad soap opera.

Calibration of the RED-100 detector at the Kalinin nuclear power plant
D. Yu. Akimov, I. S. Aleksandrov, F. B. Ata Kurbonova, V. A. Belov, A. I. Bolozdynya, A. V. Etenko, A. V. Galavanov, Yu. V. Gusakov, A. V. Khromov, A. M. Konovalov, V. N. Kornoukhov, A. G. Kovalenko, E. S. Kozlova, Yu. I. Koskin, A. V. Kumpan, A. V. Lukyashin, A. V. Pinchuk, O. E. Razuvaeva, D. G. Rudik, A. V. Shakirov, G. E. Simakov, V. V. Sosnovtsev, A. A. Vasin

Calibration of the RED-100 detector at the Kalinin nuclear power plant
RED-100 is a two-phase Xe detector designed and built for the study of coherent elastic neutrino-nucleus scattering CEvNS of reactor antineutrinos. A comprehensive calibration was performed in order to obtain important parameters of the detector during its exposition at the Kalinin Nuclear Power Plant (Tver, Russia). This paper describes the analysis of calibration data, position and energy reconstruction procedures, and evaluation of the efficiency of electron extraction from the liquid xenon …

This https://arxiv.org/abs/2402.15543 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Workshop on the limiting compactness objects: Black holes and Buchdahl stars
The workshop was organized at IUCAA on Oct 30 - Nov 3, 2023 as a compact discussion and discourse meeting with a threadbare exposition and discussion of the various aspects and the questions arising. It was occasioned by the visit of Professor Hakan Andreasson of the Gothenburg Technical University, Sweden. He has been exploring with his collaborators the Einstein - Vlasov system for over a decade and a half as a possible matter source for compact objects. This system characterizes itself by fr…

This https://arxiv.org/abs/2310.12016 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Spectral theory and self-similar blowup in wave equations
This is an expository article that describes the spectral-theoretic aspects in the study of the stability of self-similar blowup for nonlinear wave equations. The linearization near a self-similar solution leads to a genuinely nonself-adjoint operator which is difficult to analyze. The main goal of this article is to provide an accessible account to the only known method that is capable of providing sufficient spectral information to complete the stability analysis. The exposition is based on a…

Calibration of the RED-100 detector at the Kalinin nuclear power plant
D. Yu. Akimov, I. S. Aleksandrov, F. B. Ata Kurbonova, V. A. Belov, A. I. Bolozdynya, A. V. Etenko, A. V. Galavanov, Yu. V. Gusakov, A. V. Khromov, A. M. Konovalov, V. N. Kornoukhov, A. G. Kovalenko, E. S. Kozlova, Yu. I. Koskin, A. V. Kumpan, A. V. Lukyashin, A. V. Pinchuk, O. E. Razuvaeva, D. G. Rudik, A. V. Shakirov, G. E. Simakov, V. V. Sosnovtsev, A. A. Vasin

Calibration of the RED-100 detector at the Kalinin nuclear power plant
RED-100 is a two-phase Xe detector designed and built for the study of coherent elastic neutrino-nucleus scattering CEvNS of reactor antineutrinos. A comprehensive calibration was performed in order to obtain important parameters of the detector during its exposition at the Kalinin Nuclear Power Plant (Tver, Russia). This paper describes the analysis of calibration data, position and energy reconstruction procedures, and evaluation of the efficiency of electron extraction from the liquid xenon …

A Field Guide to Ethics in Mathematics
Maurice Chiodo, Dennis M\"uller
https://arxiv.org/abs/2402.10048 https://arxiv.org/pdf/24…

A Field Guide to Ethics in Mathematics
Mathematics has become inescapable in modern, digitized societies: there is hardly any area of life left that isn't affected by it, and we as mathematicians play a central role in this. Our actions affect what others, in particular our students, decide to do with mathematics, and how mathematics affects the world, for better or worse. In return, the study of ethics in mathematics (EiM) has become increasingly important, even though it is still unknown to many. This exposition tries to change th…

Auxiliary Monge-Amp\`ere Equations in Orbifold Setting -- a Mean-Value Inequality
Johannes Scheffler
https://arxiv.org/abs/2404.02812 https://

Auxiliary Monge-Ampère Equations in Orbifold Setting -- a Mean-Value Inequality
In this note, we generalize a mean-value inequality of Guo-Phong-Sturm to the setting of a compact Kähler orbifold. This shows that their reasoning is insensitive to quotient singularities. As we aim for a self-contained exposition, we generalize some fundamental results, namely the $α$-invariant estimate by Hörmander and Tian, an approximation result for the psh-envelope of a $(1,1)$-form in a Kähler class by Berman and an $L^\infty$ estimate for this envelope by Guo-Phong-Tong-Wang.