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We prove a general structure theorem for finitely presented torsion modules over a class of commutative rings that need not be Noetherian. As a first application, we then use this result to study the Weil- \'etale cohomology groups of…

Number Theory · Mathematics 2024-01-08 David Burns , Alexandre Daoud , Dingli Liang

In previous work, we showed that the solution of certain systems of discrete integrable equations, notably $Q$ and $T$-systems, is given in terms of partition functions of positively weighted paths, thereby proving the positive Laurent…

Mathematical Physics · Physics 2011-06-07 Philippe Di Francesco , Rinat Kedem

We investigate splitting-type variational problems with some linear growth conditions. For balanced solutions of the associated Euler-Lagrange equation we receive a result analogous to Bernstein's theorem on non-parametric minimal surfaces.…

Analysis of PDEs · Mathematics 2023-03-17 Michael Bildhauer , Bernhard Farquhar , Martin Fuchs

We give a nonstandard analytic proof of de Finetti's theorem for an exchangeable sequence of Bernoulli random variables. The theorem postulates that such a sequence is uniquely representable as a mixture of iid sequences of Bernoulli random…

Probability · Mathematics 2024-10-17 Irfan Alam

It has been pointed out that non-singular cosmological solutions in second-order scalar-tensor theories generically suffer from gradient instabilities. We extend this no-go result to second-order gravitational theories with an arbitrary…

High Energy Physics - Theory · Physics 2017-04-11 Shingo Akama , Tsutomu Kobayashi

This note aims to clarify the deep relationship between birational modifications of a variety and semiorthogonal decompositions of its derived category of coherent sheaves. The result is a conjecture on the existence and properties of…

Algebraic Geometry · Mathematics 2024-03-28 Daniel Halpern-Leistner

We present some results and conjectures on a generalization to the noncommutative setup of the Brouwer fixed-point theorem from the Borsuk-Ulam theorem perspective.

Quantum Algebra · Mathematics 2016-11-22 Ludwik Dabrowski

In this article, following an insight of Kontsevich, we extend the famous Weil conjecture (as well as the strong form of the Tate conjecture) from the realm of algebraic geometry to the broad noncommutative setting of dg categories. As a…

Algebraic Geometry · Mathematics 2019-12-09 Goncalo Tabuada

This paper consists in discussing some issues on generic local classification of typical singularities of $2D$ piecewise smooth vector fields when the switching set is an algebraic variety. The main focus is to obtain classification results…

Dynamical Systems · Mathematics 2016-11-14 Juliana Larrosa , Marco A. Teixeira , Tere M-Seara

We prove the existence of non-smooth solutions to fully nonlinear uniformly elliptic equations.

Analysis of PDEs · Mathematics 2009-12-17 Nikolai Nadirashvili , Serge Vladuts

We prove various finite de Finetti theorems for non-commutative distributions which are invariant under the free easy quantum group actions. This complements the free de Finetti theorems by Banica, Curran and Speicher, which mostly focus on…

Operator Algebras · Mathematics 2026-02-13 Jianquan Wang

A consistent classical mechanics formulation is presented in such a way that, under quantization, it gives a noncommutative quantum theory with interesting new features. The Dirac formalism for constrained Hamiltonian systems is strongly…

High Energy Physics - Theory · Physics 2009-06-12 Ricardo Amorim

A transfer is a group homomorphism from a finite group to an abelian quotient group of a subgroup of the group. In this paper, we explain some of the properties of transfers by using noncommutative determinants. These properties enable us…

Group Theory · Mathematics 2023-03-03 Naoya Yamaguchi

This article concludes our critical analysis on the role of non-commutativity in quantum theory. After a brief introduction of the necessary notions on point processes, we re-analyse model B proposed in "On non-commutativity in quantum…

Quantum Physics · Physics 2018-03-20 Luca Curcuraci

We give an inductive proof that the generalized Severi varieties -- the varieties which parametrize (irreducible) plane curves of given degree and genus, with a fixed tangency profile to a given line at several general fixed points and…

Algebraic Geometry · Mathematics 2019-06-19 Adrian Zahariuc

We establish a noncommutative analogue of the first fundamental theorem of classical invariant theory. For each quantum group associated with a classical Lie algebra, we construct a noncommutative associative algebra whose underlying vector…

Quantum Algebra · Mathematics 2015-05-13 G. I. Lehrer , Hechun Zhang , R. B. Zhang

We generalize Lindeberg's proof of the central limit theorem to an invariance principle for arbitrary smooth functions of independent and weakly dependent random variables. The result is applied to get a similar theorem for smooth functions…

Probability · Mathematics 2007-05-23 Sourav Chatterjee

We give an explicit characterization of all principally polarized abelian varieties $(A,\Theta)$ such that there is a finite subgroup of automorphisms $G$ of $A$ that preserve the numerical class of $\Theta$, and such that the quotient…

Algebraic Geometry · Mathematics 2022-11-29 Robert Auffarth , Giancarlo Lucchini Arteche

We investigate the geode and some of its generalizations from the point of view on noncommutative symmetric functions.

Combinatorics · Mathematics 2026-01-29 Jean-Christophe Novelli , Jean-Yves Thibon

In this short note we present a simple combinatorial trick which can be effectively applied to show the non--existence of sharply transitive sets of permutations in certain finite permutation groups.

Group Theory · Mathematics 2019-07-30 Peter Müller , Gabor P. Nagy