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Using computational algebraic geometry techniques and Hilbert bases of polyhedral cones we derive explicit formulas and generating functions for the number of magic squares and magic cubes.

Combinatorics · Mathematics 2007-05-23 M. Ahmed , J. De Loera , R. Hemmecke

This paper provides an accurate method to obtain the bidiagonal factorization of many generalized Pascal matrices, which in turn can be used to compute with high relative accuracy the eigenvalues, singular values and inverses of these…

Numerical Analysis · Mathematics 2025-01-22 Jorge Delgado , Héctor Orera , Juan Manuel Peña

We exhibit an explicit, deterministic algorithm for finding a canonical form for a positive definite matrix under unimodular integral transformations. We use characteristic sets of short vectors and partition-backtracking graph software.…

Number Theory · Mathematics 2020-11-17 Mathieu Dutour Sikirić , Anna Haensch , John Voight , Wessel P. J. van Woerden

In this note, we characterize matrix functions that preserve the strong Perron-Frobenius property using the real Jordan canonical form of a real matrix.

Rings and Algebras · Mathematics 2017-08-02 Pietro Paparella

Through a simple procedure based on the Lu-Chipman decomposition [S-Y. Lu and R. C. Chipman, J. Opt. Soc. Am A 13, 1106 (1996)] any depolarizing Mueller matrix can be transformed into a reduced form which accumulates the depolarization and…

Optics · Physics 2016-03-15 Jose J. Gil , Ignacio San Jose

Let $\mathbb{F}$ be an algebraically closed field of characteristic $0$. Given a square matrix $A \in \mathbb{F}^{n \times n}$ and a polynomial $f \in \mathbb{F}[w]$, we determine the Jordan canonical form of the formal Fr\'{e}chet…

Rings and Algebras · Mathematics 2026-05-08 Vanni Noferini

This is the second in a series of papers on rank decompositions of the matrix multiplication tensor. We present new rank $23$ decompositions for the $3\times 3$ matrix multiplication tensor $M_{\langle 3\rangle}$. All our decompositions…

Computational Complexity · Computer Science 2018-01-04 Grey Ballard , Christian Ikenmeyer , J. M. Landsberg , Nick Ryder

In this work, new closed-form formulas for the matrix exponential are provided. Our method is direct and elementary, it gives tractable and manageable formulas not current in the extensive literature on this essential subject. Moreover,…

Rings and Algebras · Mathematics 2021-08-17 Mohammed Mouçouf , Said Zriaa

The covariant canonical formalism is a covariant extension of the traditional canonical formalism of fields. In contrast to the traditional canonical theory, it has a remarkable feature that canonical equations of gauge theories or gravity…

High Energy Physics - Theory · Physics 2017-03-21 Yasuhito Kaminaga

Let $p$ be an odd prime. In the paper we collect the author's various conjectures on congruences modulo $p$ or $p^2$, which are concerned with sums of binomial coefficients, Lucas sequences, power residues and special binary quadratic…

Number Theory · Mathematics 2013-02-07 Zhi-Hong Sun

We derive a matrix product formula for symmetric Macdonald polynomials. Our results are obtained by constructing polynomial solutions of deformed Knizhnik--Zamolodchikov equations, which arise by considering representations of the…

Mathematical Physics · Physics 2015-09-30 Luigi Cantini , Jan de Gier , Michael Wheeler

We evaluate some new three parameter families of finite reciprocal sums involving Horadam numbers. We will also be able to state the results for the infinite sums. Some Fibonacci and Lucas sums will be presented as examples.

Combinatorics · Mathematics 2021-06-29 Kunle Adegoke , Robert Frontczak , Taras Goy

We provide the first explicit examples of deformations of higher dimensional quadrics: a straightforward generalization of Peterson's explicit 1-dimensional family of deformations in $\mathbb{C}^3$ of 2-dimensional general quadrics with…

Differential Geometry · Mathematics 2010-01-20 Ion I. Dinca

This paper presents new identities expressing the terms of Fibonacci, Lucas, and generalized Fibonacci sequences with multiple indices through powers of Lucas numbers and binomial coefficients. The obtained formulas rely on the application…

Combinatorics · Mathematics 2026-04-24 Nick Vorobtsov

Although different parametrizations of quark mixing matrix are mathematically equivalent, the consequences of experimental analysis may be distinct. Based on the triminimal expansion of Kobayashi-Maskawa matrix around the unit matrix, we…

High Energy Physics - Phenomenology · Physics 2011-01-27 Nan Qin , Bo-Qiang Ma

We demonstrate the existence of $K$-multimagic squares of order $N$ consisting of distinct integers whenever $N>2 K(K+1)$. This improves upon our earlier result in which we only required $N+1$ distinct integers. Additionally, we present a…

Number Theory · Mathematics 2025-01-03 Daniel Flores

In extra dimensions, the quark and lepton mass hierarchy can be reproduced from the same order bulk mass parameters, and standard model fermion families can be generated from one generation in the high dimensional space. We try to explain…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhi-qiang Guo , Bo-Qiang Ma

Universally decodable matrices can be used for coding purposes when transmitting over slow fading channels. These matrices are parameterized by positive integers $L$ and $n$ and a prime power $q$. Based on Pascal's triangle we give an…

Information Theory · Computer Science 2007-07-13 Pascal O. Vontobel , Ashwin Ganesan

We show arithmetic triplets of Gaussian squares are in 3-to-1 correspondence with Pythagorean triples thereof. This correspondence would transform a solution to the Magic Square of Squares puzzle into a larger structure of perfect Gaussian…

History and Overview · Mathematics 2023-10-20 Christian Wolird

The goal of this paper is to investigate the parameter plane of a rational family of perturbations of the doubling map given by the Blaschke products $B_a(z)=z^3\frac{z-a}{1-\bar{a}z}$. First we study the basic properties of these maps such…

Dynamical Systems · Mathematics 2015-05-12 Jordi Canela , Núria Fagella , Antonio Garijo
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