Results 41 to 50 of about 486 (75)

On the bounded generation of arithmetic ${\rm SL}_2$

open access: yes, 2019
Let $K$ be a number field and ${\mathcal O}$ be the ring of $S$-integers in $K$. Morgan, Rapinchuck, and Sury have proved that if the group of units ${\mathcal O}^{\times}$ is infinite, then every matrix in ${\rm SL}_2({\mathcal O})$ is a product of at ...
Jordan, Bruce W., Zaytman, Yevgeny
core  

On the elementary symmetric functions of a sum of matrices

open access: yes, 2009
Often in mathematics it is useful to summarize a multivariate phenomenon with a single number and in fact, the determinant -- which is represented by det -- is one of the simplest cases.
Costas-Santos, R. S.
core   +1 more source

On some determinants involving the tangent function

open access: yes, 2019
Let $p$ be an odd prime and let $a,b\in\mathbb Z$ with $p\nmid ab$. In this paper we mainly evaluate $$T_p^{(\delta)}(a,b):=\det\left[\tan\pi\frac{aj^2+bk^2}p\right]_{\delta\le j,k\le (p-1)/2}\ \ (\delta=0,1).$$ For example, in the case $p\equiv3\pmod4 ...
Sun, Zhi-Wei
core  

GCD matrices, posets, and nonintersecting paths

open access: yes, 2004
We show that with any finite partially ordered set one can associate a matrix whose determinant factors nicely. As corollaries, we obtain a number of results in the literature about GCD matrices and their relatives.
Altinisik, Ercan   +2 more
core   +1 more source

Determinants of Toeplitz–Hessenberg Matrices with Generalized Leonardo Number Entries

open access: yesAnnales Mathematicae Silesianae
Let un = un(k) denote the generalized Leonardo number defined recursively by un = un−1 + un−2 + k for n ≥ 2, where u0 = u1 = 1. Terms of the sequence un(1) are referred to simply as Leonardo numbers.
Goy Taras, Shattuck Mark
doaj   +1 more source

Sequences in overpartitions. [PDF]

open access: yesRamanujan J, 2023
Andrews GE, Uncu AK.
europepmc   +1 more source

Sets of range uniqueness for multivariate polynomials and linear functions with rank k. [PDF]

open access: yesLinear Multilinear Algebra, 2022
Halbeisen L   +3 more
europepmc   +1 more source

The development of surgical risk score and evaluation of necrotizing soft tissue infection in 161 Naja atra envenomed patients. [PDF]

open access: yesPLoS Negl Trop Dis, 2022
Lai CS   +12 more
europepmc   +1 more source

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