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We prove a linear and a nonlinear generalization of the Lax-Milgram theorem. In particular we give sufficient conditions for a real-valued function defined on the product of a reflexive Banach space and a normed space to represent all…

Functional Analysis · Mathematics 2008-06-02 D. Drivaliaris , N. Yannakakis

We formulate and prove finite dimensional analogs for the classical Balian-Low theorem, and for a quantitative Balian-Low type theorem that, in the case of the real line, we obtained in a previous work. Moreover, we show that these results…

Classical Analysis and ODEs · Mathematics 2017-07-21 Shahaf Nitzan , Jan-Fredrik Olsen

In this paper we study codes where the alphabet is a finite Frobenius bimodule over a finite ring. We discuss the extension property for various weight functions. Employing an entirely character-theoretic approach and a duality theory for…

Information Theory · Computer Science 2016-11-14 Heide Gluesing-Luerssen , Tefjol Pllaha

The concept of logarithmic representation of infinitesimal generators is introduced, and it is applied to clarify the algebraic structure of bounded and unbounded infinitesimal generators. In particular, by means of the logarithmic…

Functional Analysis · Mathematics 2020-12-02 Yoritaka Iwata

In this short article we do not prove Fermat's last theorem. We show that the number 2 is an exceptional number in this theorem.

Combinatorics · Mathematics 2021-09-16 Ivan Deriyenko

The validity of the Addition Theorem for algebraic entropies $\ent_L$ induced by non-discrete length functions $L$ on the category of locally $L$-finite modules over arbitrary rings is proved. Concrete examples of non-discrete length…

Rings and Algebras · Mathematics 2015-05-12 Luigi Salce , Simone Virili

This paper presents a brief exposition of Soergel bimodules with applications to some topics in Kazhdan-Lusztig theory. We ultimately exposit a few of Soergel's main results, which allowed him to give alternative proofs, using his theory,…

Representation Theory · Mathematics 2025-01-08 Ethan Eugene Wynner

We prove an existence result for exact lagrangian cobordisms between closed legendrians.

Differential Geometry · Mathematics 2016-02-23 Sauvik Mukherjee

This article examines the formula G (of Goedel). We demonstrated that the Goedel's number of the formula G is not a finite number if (i) G is comprehended as a self-referential statement or (ii) there is an infinite set S of well-formed…

General Mathematics · Mathematics 2023-02-23 Jailton C. Ferreira

We improve the theorem on continuous dependence of solutions of functional differential equations (see J. Hale, Functional differential equations, theorem 5.1), using some new results on continuous convergences. Namely, we prove this…

Functional Analysis · Mathematics 2017-03-30 E. Athanasiadou , C. Papachristodoulos

A Lefschetz module is a module over a graded algebra $A$ that satisfies analogues of Poincar\'{e} duality, the Hard Lefschetz property, and the Hodge--Riemann relations with respect to an open convex cone $\mathscr{K}$ in the degree one…

Algebraic Geometry · Mathematics 2025-11-05 Omid Amini , June Huh , Matt Larson

We provide a self-contained proof of the Artin-Wedderburn theorem in the case of finite-dimensional Von Neumann algebras (or equivalently unital C* algebras) that is fully constructive and uses only basic notions of linear algebra.

Rings and Algebras · Mathematics 2025-07-15 Octave Mestoudjian , Pablo Arrighi

We prove a version of the finiteness conjecture for Kauffman bracket skein modules of $3$-manifolds with boundary, which was introduced by the second author in \cite{Det21}. In particular our methods, which are constructive, give an…

Geometric Topology · Mathematics 2025-07-04 Giulio Belletti , Renaud Detcherry

We develop both bilinear theory and commutator estimates in the context of entangled dilations, specifically Zygmund dilations $(x_1, x_2, x_3) \mapsto (\delta_1 x_1, \delta_2 x_2, \delta_1 \delta_2 x_3)$ in $\mathbb{R}^3$. We construct…

Classical Analysis and ODEs · Mathematics 2024-11-14 Emil Airta , Kangwei Li , Henri Martikainen

We show how lattice paths and the reflection principle can be used to give easy proofs of unimodality results. In particular, we give a "one-line" combinatorial proof of the unimodality of the binomial coefficients. Other examples include…

Combinatorics · Mathematics 2007-05-23 Bruce Sagan

We generalize the finiteness theorem for the locus of Hodge classes with fixed self-intersection number, due to Cattani, Deligne, and Kaplan, from Hodge classes to self-dual classes. The proof uses the definability of period mappings in the…

Algebraic Geometry · Mathematics 2026-05-06 Benjamin Bakker , Thomas W. Grimm , Christian Schnell , Jacob Tsimerman

We establish sharp lower bounds for shifted (with two shifts) moments of Dirichlet $L$-function of fixed modulus under the generalized Riemann hypothesis.

Number Theory · Mathematics 2025-04-30 Peng Gao , Liangyi Zhao

We give degree lower bounds for quotient line bundles of the lowest piece of a Hodge module induced by a complex variation of Hodge structures outside a simple normal crossing divisor, beyond the unipotent variation case. This note aims to…

Algebraic Geometry · Mathematics 2026-05-14 Ze Yun

Hahn's embedding theorem asserts that linearly ordered abelian groups embed in some lexicographic product of real groups. Hahn's theorem is generalized to a class of residuated semigroups in this paper, namely, to odd involutive commutative…

Rings and Algebras · Mathematics 2020-06-12 Sándor Jenei

We prove a noncommutative version of Bishop's peak interpolation-set theorem.

Operator Algebras · Mathematics 2023-04-05 David P. Blecher