Ratsiri Sanguanwong

activity

20182021

most citedA remark on an equivalence of two versions of Polya's permanent problem

1 citations · 1 across the 3 of their papers we have counts for

collaborators

4 papers

math.RA2021

Determinants preserving maps on the spaces of symmetric matrices and skew-symmetric matrices

Ratsiri Sanguanwong, Kijti Rodtes

Denote $Σ_{n}$ and $Q_{n}$ the set of all $n \times n$ symmetric and skew-symmetric matrices over a field $F$ , respectively, where $c ha r (F) \neq = 2$ and $\lvert \mathbb…

math.RA2020★ 1 cited

A remark on an equivalence of two versions of Polya's permanent problem

Ratsiri Sanguanwong, Kiji Rodtes

In 2004, some equivalent versions of Polya's permanent problem were listed in 24 versions. However, there is a flaw on the theorem that affirms an equivalence of version 11 and 12.…

math.RA2019

Generalized matrix functions on a linear sum of permutation matrices and their cousins

Ratsiri Sanguanwong, Kijti Rodtes

A generalized matrix function is a generalization of determinant and permanent function. In this paper, we introduced the formula for the value of a generalized matrix function of…

math.RA2018

The equality of generalized matrix functions on the set of all symmetric matrices

Ratsiri Sanguanwong, Kijti Rodtes

A generalized matrix function $d_{χ}^{G} : M_{n} (C) \to C$ is a function constructed by a subgroup $G$ of $S_{n}$ and a complex valued function $χ$ of $G$ . The ma…