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We report on recent advances in the understanding of non-perturbative phenomena in the quantum theory of fields and strings.

High Energy Physics - Theory · Physics 2007-05-23 Sergio Ferrara

This is a survey of recent progress on the irreducibility of Fermi varieties, rigidity results and embedded eigenvalue problems of discrete periodic Schr\"odinger operators.

Mathematical Physics · Physics 2022-02-18 Wencai Liu

We prove an analogue of the Approximation Theorem of L^2-Betti numbers by Betti numbers for arbitrary coefficient fields and virtually torsionfree amenable groups. The limit of Betti numbers is identified as the dimension of some module…

K-Theory and Homology · Mathematics 2010-03-02 Peter Linnell , Wolfgang Lueck , Roman Sauer

Moderate deviations for random complex zeroes are deduced from a new theorem on moderate deviations for random fields.

Probability · Mathematics 2008-01-08 Boris Tsirelson

K. Kato's conjecture about the cohomological Hasse principle for regular connected schemes $\mathfrak X$ which are flat and proper over the complete discrete valuation rings $\mathcal O_N$ of higher local fields $F_N$ is proven. This…

Number Theory · Mathematics 2016-05-27 Patrick Forré

In this lecture notes we try to familiarize the audience with the theory of Bernoulli polynomials; we study their properties, and we give, with proofs and references, some of the most relevant results related to them. Several applications…

Classical Analysis and ODEs · Mathematics 2016-02-10 Omran Kouba

Finite fields form an important chapter in abstract algebra, and mathematics in general. We aim to provide a geometric and intuitive model for finite fields, involving algebraic numbers, in order to make them accessible and interesting to a…

History and Overview · Mathematics 2017-08-31 Lucian M. Ionescu , Mina M. Zarrin

It is a fairly known fact that most of the algebras appearing in the theory of rings of differential operators, quantized algebras of different kinds (including many quantum groups), regular algebras in projective non-commutative geometry,…

Quantum Algebra · Mathematics 2007-05-23 Cornel Baetica , Freddy Van Oystaeyen

We prove some algebraic results on the ring of matrix differential operators over a differential field in the generality of non-commutative principal ideal rings. These results are used in the theory of non-local Poisson structures.

Rings and Algebras · Mathematics 2015-12-18 Sylvain Carpentier , Alberto De Sole , Victor G. Kac

Given a perfectoid field, we find an elementary extension and a henselian defectless valuation on it, whose value group is divisible and whose residue field is an elementary extension of the tilt. This specializes to the almost purity…

Commutative Algebra · Mathematics 2025-03-13 Franziska Jahnke , Konstantinos Kartas

We consider various counting questions for irreducible binomials over finite fields. We use various results from analytic number theory to investigate these questions.

Number Theory · Mathematics 2017-07-12 Randell Heyman , Igor E. Shparlinski

Let $T$ be a polynomially bounded o-minimal theory extending the theory of real closed ordered fields. Let $K$ be a model of $T$ equipped with a $T$-convex valuation ring and a $T$-derivation. If this derivation is continuous with respect…

Logic · Mathematics 2023-03-08 Elliot Kaplan

We first prove a Cauchy's integral theorem and Cauchy type formula for certain inhomogeneous Cimmino system from quaternionic analysis perspective. The second part of the paper directs the attention towards some applications of the…

Complex Variables · Mathematics 2022-09-27 José Oscar González Cervantes , Dante Arroyo Sánchez , Juan Bory Reyes

We study combinatorial properties of convex sets over arbitrary valued fields. We demonstrate analogs of some classical results for convex sets over the reals (e.g. the fractional Helly theorem and B\'ar\'any's theorem on points in many…

Combinatorics · Mathematics 2023-05-31 Artem Chernikov , Alex Mennen

We introduce a ring and a field, generated by a semigroup, and we investigate some of their properties.

Commutative Algebra · Mathematics 2018-01-29 Volker Thürey

We give a characterization, in terms of the residue field, of those henselian valuation rings and those henselian valuation ideals that are diophantine. This characterization gives a common generalization of all the positive and negative…

Logic · Mathematics 2017-05-24 Sylvy Anscombe , Arno Fehm

The notion of newtonianity is central to the study of the ordered differential field of logarithmic-exponential transseries done by Aschenbrenner, van den Dries, and van der Hoeven; see Chapter 14 of arxiv:1509.02588. We remove the…

Commutative Algebra · Mathematics 2020-09-28 Nigel Pynn-Coates

This paper extends two recent improvements in the Hilbert space setting of the well-known Katznelson-Tzafriri theorem by establishing both a version of the result valid for bounded representations of a large class of abelian semigroups and…

Functional Analysis · Mathematics 2019-02-14 David Seifert

We give a new, elementary proof of the celebrated Herzog-Hibi-Zheng theorem on powers of quadratic monomial ideals.

Commutative Algebra · Mathematics 2025-01-15 Antonino Ficarra

We previously obtained a generalization and refinement of results about the ramification theory of Artin-Schreier extensions of discretely valued fields in characteristic $p$ with perfect residue fields to the case of fields with more…

Number Theory · Mathematics 2017-07-07 Vaidehee Thatte