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In this note we verify the equivalent version of Huppert's conjecture for $K_3$-groups.

Group Theory · Mathematics 2021-04-13 Mohsen Ghasemi , Somayeh Hekmatara

We prove Haynes' version of the Duffin--Schaeffer conjecture for the $p$-adic numbers. In addition, we prove several results about an associated related but false conjecture, related to $p$-adic approximation in the spirit of Jarn\'ik and…

Number Theory · Mathematics 2022-05-11 Simon Kristensen , Mathias Løkkegaard Laursen

We give a remarkably elementary proof of the Brouwer fixed point theorem. The proof is verifiable for most of the mathematicians.

History and Overview · Mathematics 2011-09-22 Yukio Takeuchi , Tomonari Suzuki

Some simple facts are proved ruling the Collatz tree and the chains of vertices appearing in it, leading to the reduction of the number of significant elements appearing in the tree. Although the Collatz conjecture remains open, these fact…

General Mathematics · Mathematics 2020-07-07 Fabrizio Luccio

In this article, we give proofs on the Arnold Lagrangian intersection conjecture on the cotangent bundles, Arnold-Givental Lagrangian intersection conjecture and the Arnold fixed point conjecture.

Symplectic Geometry · Mathematics 2013-07-08 Renyi Ma

We obtain some results related to Romanoff's theorem.

Number Theory · Mathematics 2023-09-26 Artyom Radomskii

In this note, we provide a short proof of Feige's conjecture for identically distributed random variables.

Probability · Mathematics 2025-09-25 Martín Egozcue , Luis Fuentes García

This article describes a new proof of the equality condition for the Brunn-Minkowski inequality.

Metric Geometry · Mathematics 2010-05-11 Daniel A. Klain

This is an informal paper presenting historical results around the recent paper of the author about Lang's Conjecture and torsion of elliptic curves. This paper also discusses a few aspects of the proof.

Number Theory · Mathematics 2017-09-13 Benjamin Wagener

We prove a conjecture due to Y. Last on Jacobi matrices.

Classical Analysis and ODEs · Mathematics 2009-08-27 Sergey A. Denisov

We prove Dejean's conjecture. Specifically, we show that Dejean's conjecture holds for the last remaining open values of n, namely 15 <= n <= 26.

Combinatorics · Mathematics 2009-05-22 James Currie , Narad Rampersad

We prove that the construction of our previous paper math.QA/0103190 yields an invariant of tangle cobordisms.

Quantum Algebra · Mathematics 2007-05-23 Mikhail Khovanov

We prove some extensions of Andrews inequality.

Differential Geometry · Mathematics 2020-11-02 Hao Fang , Biao Ma , Wei Wei

We present a conjecture about partitions, with a very elementary formulation.

Combinatorics · Mathematics 2007-05-23 Michel Lassalle

We prove the A-theoretic Farrell-Jones Conjecture for virtually solvable groups. As a corollary, we obtain that the conjecture holds for S-arithmetic groups and lattices in almost connected Lie groups.

K-Theory and Homology · Mathematics 2018-09-28 Daniel Kasprowski , Mark Ullmann , Christian Wegner , Christoph Winges

In this paper a new conjecture equivalent to Collatz conjecture is presented. In particural, showing that (all) the solution(s) of newly introduced iterative functional equation(s) have a given property is equivalent to prove Collatz…

General Mathematics · Mathematics 2023-05-18 Giulio Masetti

We prove inversion of adjunction on log canonicity.

Algebraic Geometry · Mathematics 2009-11-11 Masayuki Kawakita

In this paper, we give a simple counter example to the famous Hodge conjecture.

General Mathematics · Mathematics 2013-01-23 Renyi Ma

In this paper we present another proof of the analytic version of the Hahn-Banach theorem in terms of convex functionals.

Functional Analysis · Mathematics 2020-03-19 Sokol Bush Kaliaj

We prove two conjectures on sums of products of Catalan triangle numbers, which were originally conjectured by Miana, Ohtsuka, and Romero [Discrete Math. 340 (2017), 2388--2397]. The first one is proved by using Zeilberger's algorithm, and…

Combinatorics · Mathematics 2018-06-08 Victor J. W. Guo , Xiuguo Lian