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A proof of Smale's mean value conjecture from 1981 is given.

Complex Variables · Mathematics 2007-05-23 Gerald Schmieder

Given a rational number $x$ and a bound $\varepsilon$, we exhibit $m,n$ such that $|x-12 s(m,n)|<\varepsilon$. Here $s(m,n)$ is the classical Dedekind sum and the parameters $m$ and $n$ are completely explicit in terms of $x$ and…

Number Theory · Mathematics 2013-10-04 Kurt Girstmair

This document presents an alternative proof of Sylvester's theorem stating that "the product of $n$ consecutive numbers strictly greater than $n$ is divisible by a prime strictly greater than $n$". In addition, the paper proposes stronger…

Number Theory · Mathematics 2023-03-10 Steven Brown

In this paper, using quaternion arithmetic in the ring of Lipschitz integers, we present a proof of Zh\`i-W\v{e}i S\={u}n's "1-3-5 conjecture" for integral solutions, and for all natural numbers greater than a specific constant. This,…

Number Theory · Mathematics 2025-08-07 António Machiavelo , Nikolaos Tsopanidis

We describe a new algorithm for verifying the Collatz conjecture for all n < 2^N for some fixed N. The algorithm takes less than twice as long to verify convergence for all n < 2^{N+1} as it does to verify convergence for all n < 2^N. We…

Number Theory · Mathematics 2026-02-12 Vigleik Angeltveit

Gallai's path decomposition conjecture states that the edges of any connected graph on n vertices can be decomposed into at most (n+1)/2 paths. We confirm that conjecture for all graphs with maximum degree at most five.

Combinatorics · Mathematics 2016-09-21 Marthe Bonamy , Thomas Perrett

In this paper we present an equivalent statement to the Jacobian conjecture. For a polynomial map F on an affine space of dimension n, we define recursively n finite sequences of polynomials. We give an equivalent condition to the…

Commutative Algebra · Mathematics 2016-01-05 Elzbieta Adamus , Pawel Bogdan , Teresa Crespo , Zbigniew Hajto

We give a new, algebraically computable formula for skein modules of closed 3-manifolds via Heegaard splittings. As an application, we prove that skein modules of closed 3-manifolds are finite-dimensional, resolving in the affirmative a…

Quantum Algebra · Mathematics 2022-12-21 Sam Gunningham , David Jordan , Pavel Safronov

It has been long congectured that the crossing number of $C_m\times C_n$ is $(m-2)n$ for $2<m<=n$. In this paper we proved that conjecture is true for all but finitely many $n$ for each $m$. More specifically we proved conjecture for…

Combinatorics · Mathematics 2007-05-23 Lev Glebsky , Gelasio Salazar

In this paper, we consider sums of values of degenerate falling factorials and give a probabilistic proof of a recurrence relation for them. This may be viewed as a degenerate version of the recent probabilistic proofs on sums of powers of…

Number Theory · Mathematics 2024-09-13 Taekyun Kim , Dae san Kim

We provide a proof of a variant of the Landau-Siegel Zeros conjecture.

Number Theory · Mathematics 2007-05-31 Yitang Zhang

The illumination conjecture asserts that any convex body in $n$-dimensional Euclidean space can be illuminated by at most $2^n$ external light sources or parallel beams of light. Despite recent progress on the illumination conjecture, it…

Metric Geometry · Mathematics 2026-02-05 Andrii Arman , Jaskaran Singh Kaire , Andriy Prymak

Let $a_{i,j}(n)$ denote the number of walks in $n$ steps from $(0,0)$ to $(i,j)$, with steps $(\pm 1,0)$ and $(0,\pm 1)$, never touching a point $(-k,0)$ with $k\ge 0$ after the starting point. \bous and Schaeffer conjectured a closed form…

Combinatorics · Mathematics 2007-05-23 Guoce Xin

The Frankl conjecture, also known as the union-closed sets conjecture, states that in any finite non-empty union-closed family, there exists an element in at least half of the sets. From an optimization point of view, one could instead…

Combinatorics · Mathematics 2016-08-03 Jonad Pulaj , Annie Raymond , Dirk Theis

Under Cram\'er's conjecture concerning the prime numbers, we prove that for any $x>1$, there exists a real $A=A(x)>1$ for which the formula $[A^{n^x}]$ (where $[]$ denotes the integer part) gives a prime number for any positive integer $n$.…

Number Theory · Mathematics 2007-05-23 Bakir Farhi

Zaremba's 1971 conjecture predicts that every integer appears as the denominator of a finite continued fraction whose partial quotients are bounded by an absolute constant. We confirm this conjecture for a set of density one.

Number Theory · Mathematics 2013-07-15 Jean Bourgain , Alex Kontorovich

We provide a proof of the Borwein Conjecture using analytic methods.

Combinatorics · Mathematics 2021-10-01 Chen Wang

We report the results of our empirical investigations on the Bateman-Horn conjecture. This conjecture, in its commonly known form, produces rather large deviations when the polynomials involved are not monic. We propose a modified version…

Number Theory · Mathematics 2019-06-11 Weixiong Li

In this note, we prove that if $\{a,b,c,d,e\}$ with $a<b<c<d<e$ is a Diophantine quintuple, then $d<10^{76}$.

Number Theory · Mathematics 2014-07-24 Wenquan Wu , Bo He

In this short note, we will show that the metric of Deligne's pairing is continous.

Algebraic Geometry · Mathematics 2007-05-23 Atsushi Moriwaki