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Two-parameter generalizations of depolarizing channels are introduced and studied. These so-called Cartan-covariant channels have a covariance Lie group that forms a Cartan decomposition of SU$(D)$. The regions of completely positive and…

Quantum Physics · Physics 2025-01-10 Sean Prudhoe

Complex continuous or mixed joint distributions (e.g., P(Y | z_1, z_2, ..., z_N)) generally lack closed-form solutions, often necessitating approximations such as MCMC. This paper proposes Indeterminate Probability Theory (IPT), which makes…

Machine Learning · Computer Science 2025-06-24 Tao Yang , Chuang Liu , Xiaofeng Ma , Weijia Lu , Ning Wu , Bingyang Li , Zhifei Yang , Peng Liu , Lin Sun , Xiaodong Zhang , Can Zhang

A recent conjecture by I. Ra\c{s}a asserts that the sum of the squared Bernstein basis polynomials is a convex function in $[0,1]$. This conjecture turns out to be equivalent to a certain upper pointwise estimate of the ratio…

Classical Analysis and ODEs · Mathematics 2014-02-27 Geno Nikolov

We prove the Tate conjecture for integral degree 4 classes on a smooth cubic hypersurface X of dimension 4 over an algebraic closure of a field finitely generated over its prime subfield.

Algebraic Geometry · Mathematics 2019-02-20 François Charles , Alena Pirutka

We connect the existence of a ternary classical universal quadratic form over a totally real number field $K$ with the property that all totally positive multiples of 2 are sums of squares (if $K$ does not contain $\sqrt 2$ or contains a…

Number Theory · Mathematics 2025-10-23 Vitezslav Kala , Kristyna Kramer , Jakub Krasensky

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.

Complex Variables · Mathematics 2010-11-17 Lasha Ephremidze

In this paper, we investigate sums of four squares of integers whose prime factorizations are restricted, making progress towards a conjecture of Sun that states that two of the integers may be restricted to the forms $2^a3^b$ and $2^c5^d$.…

Number Theory · Mathematics 2022-02-09 Soumyarup Banerjee

A new representation of Dirac's delta-distribution, based on the so-called q-exponentials, has been recently conjectured. We prove here that this conjecture is indeed valid.

Mathematical Physics · Physics 2015-05-19 A. Chevreuil , A. Plastino , C. Vignat

The paper presents a counterexample to the Hodge conjecture.

General Mathematics · Mathematics 2020-07-28 Jorma Jormakka

We express the positive partial transpose (PPT) separability criterion for symmetric states of multi-qubit systems in terms of matrix inequalities based on the recently introduced tensor representation for spin states. We construct a matrix…

Quantum Physics · Physics 2016-11-09 Fabian Bohnet-Waldraff , Daniel Braun , Olivier Giraud

This is a survey paper of the developments on the geometric Bogomolov conjecture. We explain the recent results by the author as well as previous works concerning the conjecture. This paper also includes an introduction to the height theory…

Algebraic Geometry · Mathematics 2017-03-16 Kazuhiko Yamaki

This is a survey on Kawaguchi-Silverman conjecture.

Algebraic Geometry · Mathematics 2023-11-28 Yohsuke Matsuzawa

Two theorems on the theory of cluster expansions for an abstract polymer system are reported.

Statistical Mechanics · Physics 2012-06-20 Salvador Miracle-Sole

In this paper, we state a conjecture on the prime factorization of numbers of the form $n!+1$, explore its implications, and compare it with empirical evidence and established results based on the $abc$ conjecture.

General Mathematics · Mathematics 2018-09-21 William Gerst

We first give a characterization for Mathieu subspaces of univariate polynomial algebras over fields in terms of their radicals. We then deduce that for some classes of classical univariate orthogonal polynomials the Image Conjecture is…

Commutative Algebra · Mathematics 2022-08-12 Arno van den Essen , Wenhua Zhao

A proof of Sendov's conjecture is given.

Complex Variables · Mathematics 2007-05-23 Gerald Schmieder

We introduce a generalization to the lottery ticket hypothesis in which the notion of "sparsity" is relaxed by choosing an arbitrary basis in the space of parameters. We present evidence that the original results reported for the canonical…

Machine Learning · Computer Science 2021-07-27 Ibrahim Alabdulmohsin , Larisa Markeeva , Daniel Keysers , Ilya Tolstikhin

We prove a topological version of the section conjecture for the profinite completion of the fundamental group of finite CW-complexes equipped with the action of a group of prime order $p$ whose $p$-torsion cohomology can be killed by…

Number Theory · Mathematics 2014-02-26 Ambrus Pal

The article presents the proof of Casas-Alvero conjecture.

Number Theory · Mathematics 2017-05-09 Edward Dobrowolski

The aim of this paper is to describe an approach to a a strengthened form of J. Tits' Centre Conjecture for spherical buildings. This is accomplished by generalizing a fundamental result of G. R. Kempf from Geometric Invariant Theory and…

Group Theory · Mathematics 2011-12-19 Michael Bate , Benjamin Martin , Gerhard Roehrle