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We prove a theorem which implies a quantum (multiplicative) analogue of the Horn conjecture, and also of the saturation conjecture. We obtain transversality statements for quantum schubert calculus in any characteristic and also determine…

Algebraic Geometry · Mathematics 2007-05-23 Prakash Belkale

Simple and shorter proofs of two Dirac-type theorems involving connectivity are presented.

Combinatorics · Mathematics 2009-07-27 Karlen Mosesyan , Mher Nikoghosyan , Zhora Nikoghosyan

In [J. Combin. Theory Ser. B 70 (1997), 2-44] we gave a simplified proof of the Four-Color Theorem. The proof is computer-assisted in the sense that for two lemmas in the article we did not give proofs, and instead asserted that we have…

Combinatorics · Mathematics 2014-01-28 Neil Robertson , Daniel P. Sanders , Paul Seymour , Robin Thomas

Many proofs of the Fundamental Theorem of Algebra, including various proofs based on the theory of analytic functions of a complex variable, are known. To the best of our knowledge, this proof is different from the existing ones.

General Mathematics · Mathematics 2022-08-09 Bikash Chakraborty

We give a new proof of Lucas' Theorem in elementary number theory.

Number Theory · Mathematics 2013-01-21 Alexandre Laugier , Manjil P. Saikia

We give a short proof of a slightly weaker version of the multilinear Kakeya inequality proven by Bennett, Carbery, and Tao.

Analysis of PDEs · Mathematics 2019-02-20 Larry Guth

We give an elementary proof of Kelley's theorem based on a minimax argument. Some applications to related problems are also developed.

Functional Analysis · Mathematics 2019-09-24 Gianluca Cassese

Tauberian Theorems of exponential type provided by Kohlbecker, de Bruijn, and Kasahara are proved in only one Tauberian theorem. To this aim, the structure of those classical tauberian theorems is identified and, using a relationship…

Classical Analysis and ODEs · Mathematics 2015-08-18 Meitner Cadena

In this note we give two proofs of Brooks' Theorem. The first is obtained by modifying an earlier proof and the second by combining two earlier proofs. We believe these proofs are easier to teach in Computer Science courses.

Discrete Mathematics · Computer Science 2025-10-06 Gopalan Sajith , Sanjeev Saxena

We give a relatively easy proof of the Erd\H os-Kac theorem via computing moments. We show how this proof extends naturally in a sieve theory context, and how it leads to several related results in the literature.

Number Theory · Mathematics 2007-05-23 Andrew Granville , K. Soundararajan

A new transparent proof of the well known good compactification theorem for the complex torus $(\Bbb C^*)^n$ is presented. This theorem provides a powerful tool in enumerative geometry for subvarieties in the complex torus. The paper also…

Algebraic Geometry · Mathematics 2020-02-07 Askold Khovanskii

The assumptions needed to prove Cox's Theorem are discussed and examined. Various sets of assumptions under which a Cox-style theorem can be proved are provided, although all are rather strong and, arguably, not natural.

Artificial Intelligence · Computer Science 2007-05-23 Joseph Y. Halpern

We give a proof of the o-minimal version of the Whitney Extension Theorem simplified as compared to the original ones. A new simplifying ingredient is a definable variant of Urysohn's lemma for class $\mathcal{C}^q$ (see Section 3).

Logic · Mathematics 2026-03-17 Beata Kocel-Cynk , Wiesław Pawłucki , Anna Valette

In this short note, we establish an operator theoretic version of the Wiener-Ikehara tauberian theorem, and point out how this leads to a new proof of the Prime number theorem that should be accessible to anyone with a basic knowledge of…

Functional Analysis · Mathematics 2020-11-16 Jan-Fredrik Olsen

We present a solution of Exercise 1.2.1 of [2] which yields a short new proof of a key step in one of proofs of Brouwer's fixed point theorem, 1910. A few people asked the author about the details of the solution and they might be…

Classical Analysis and ODEs · Mathematics 2025-02-18 N. V. Krylov

In this short note I restate and simplify the proof of the impossibility of probabilistic induction from Popper (1992). Other proofs are possible (cf. Popper (1985)).

Artificial Intelligence · Computer Science 2021-07-05 Vaden Masrani

The purpose of this short note is to present a simplified proof of Serre's modularity conjecture using the strong modularity lifting results currently available. This second version includes extra details on definitions and proofs than the…

Number Theory · Mathematics 2022-05-04 Luis Victor Dieulefait , Ariel Martín Pacetti

A very short proof of the Fej\'er-Riesz lemma is presented in the matrix case

Complex Variables · Mathematics 2007-08-17 L. Ephremidze , G. Janashia , E. Lagvilava

We give a generalization and a short mechanized proof of determinant conjectured by G. Kuperberg and J. Propp. Further generalizations and applications of the method to some q-analogues may be found in http://www.math.temple.edu/~tewodros

Combinatorics · Mathematics 2007-05-23 Tewodros Amdeberhan , Shalosh B. Ekhad

We show that Thompson's $A\times B$-Lemma can be obtained as a consequence of the Brauer pair version of Brauer's Third Main Theorem.

Group Theory · Mathematics 2021-05-19 Radha Kessar , Markus Linckelmann