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Let R be a regular local ring, containing an infinite field. Let G be a reductive group scheme over R. We prove that a principal G-bundle over R is trivial, if it is trivial over the fraction field of R.

代数几何 · 数学 2015-11-16 Roman Fedorov , Ivan Panin

The Mordell--Lang conjecture for abelian varieties states that the intersection of an algebraic subvariety $X$ with a subgroup of finite rank is contained in a finite union of cosets contained in $X$. In this article, we prove a uniform…

数论 · 数学 2026-03-27 Ziyang Gao , Tangli Ge , Lars Kühne

In this note, we give an alternate proof of the multinomial theorem using a probabilistic approach. Although the multinomial theorem is basically a combinatorial result, our proof may be simpler for a student familiar with only basic…

综合数学 · 数学 2019-07-25 K. K. Kataria

Most of the assertions in the theory of well ordered sets are quite simple. However, one of its central statements, Zermelo's theorem, stands out of this rule, for its well-known proofs are rather complicated. The aim of the current paper…

一般拓扑 · 数学 2011-12-02 V. V. Filippov , E. Yu. Mychka

We prove that the Buchweitz-Greuel-Schreyer Conjecture on the minimal rank of a matrix factorization holds for a generic polynomial of given degree and strength. The proof introduces a notion of the secondary strength of a polynomial, and…

交换代数 · 数学 2022-09-28 Daniel Erman

We present an improved incremental selection algorithm of the selection algorithm presented in [1] and prove all the selected conjectures.

We show that the Fr\"oberg conjecture holds in the second non-trivial degree for an ideal generated by generic forms of degree $d>2$. We also show that the conjecture is true up to degree $2d-1$ provided that the number of variables is…

交换代数 · 数学 2026-05-06 Mats Boij , Eric Dannetun , Samuel Lundqvist

We prove that the `Upper Matching Conjecture' of Friedland, Krop, and Markstr\"om and the analogous conjecture of Kahn for independent sets in regular graphs hold for all large enough graphs as a function of the degree. That is, for every…

组合数学 · 数学 2021-08-02 Ewan Davies , Matthew Jenssen , Will Perkins

Let $\mathbb{M}:=(M(X),p)$ be a direct summand of the motive associated with a geometrically split, geometrically variety over a field $F$ satisfying the nilpotence principle. We show that under some conditions on an extension $E/F$, if…

代数几何 · 数学 2009-06-11 Charles De Clercq

We prove the following version of the Loebl-Komlos-Sos Conjecture: For every alpha>0 there exists a number M such that for every k>M every n-vertex graph G with at least (0.5+alpha)n vertices of degree at least (1+alpha)k contains each tree…

The article on the upper central series of infinite groups by M. de Falco, F. de Giovanni, C. Musella and Y.P. Sysak, proceedings of the american mathematical society, Volume 139, Number 2, February 2011, 385--389 consists of a quite long…

群论 · 数学 2011-09-12 Igor Ya. Subbotin

The union-closed sets conjecture, attributed to P\'eter Frankl from 1979, states that for any non-empty finite union-closed family of finite sets not consisting of only the empty set, there is an element that is in at least half of the sets…

组合数学 · 数学 2023-06-08 Masoud Zargar

Let R be a regular local ring, containing a finite field. Let G be a reductive group scheme over R. We prove that a principal G-bundle over R is trivial, if it is trivial over the fraction field of R. If the regular local ring R contains an…

代数几何 · 数学 2017-07-07 Ivan Panin

We present a simple proof of Christer Borell's general inequality in the Brunn-Minkowski theory. We then discuss applications of Borell's inequality to the log-Brunn-Minkowski inequality of B\"or\"oczky, Lutwak, Yang and Zhang.

泛函分析 · 数学 2015-12-15 Arnaud Marsiglietti

In the present paper, we propose a new generalization of the Borel-Cantelli lemma. This generalization can be further used to derive strong limit results for Markov chains. Illustrative applications are provided.

统计方法学 · 统计学 2014-01-31 Alexei Stepanov

A very simple and short proof of the polynomial matrix spectral factorization theorem (on the unit circle as well as on the real line) is presented, which relies on elementary complex analysis and linear algebra.

复变函数 · 数学 2010-11-17 Lasha Ephremidze

Assuming Schanuel's Conjecture we prove that for any variety V over the algebraic closure over the rational numbers, of dimension n and with dominant projections, there exists a generic point in V. We obtain in this way many instances of…

逻辑 · 数学 2025-01-13 Paola D'Aquino , Antongiulio Fornasiero , Giuseppina Terzo

We prove global effective versions of the Brian\ccon-Skoda-Huneke theorem. Our results extend, to singular varieties, a result of Hickel on the membership problem in polynomial ideals in $\mathbf C^n$, and a related theorem of Ein and…

复变函数 · 数学 2014-11-04 Mats Andersson , Elizabeth Wulcan

Glivenko's theorem says that, in propositional logic, classical provability of a formula entails intuitionistic provability of double negation of that formula. We generalise Glivenko's theorem from double negation to an arbitrary nucleus,…

计算机科学中的逻辑 · 计算机科学 2021-12-30 Giulio Fellin , Peter Schuster

The purpose of this note is to give an affirmative answer to a conjecture appearing in [Integral Transforms Spec. Funct. 26 (2015) 90-95].

经典分析与常微分方程 · 数学 2019-10-03 K. Castillo , M. N. de Jesus , J. Petronilho