2 papers
math.CO2017
A matrix approach to the Yang multiplication theorem
Akihiro Munemasa, Pritta Etriana Putri
In this paper, we use two-variable Laurent polynomials attached to matrices to encode properties of compositions of sequences. The Lagrange identity in the ring of Laurent polynomi…
math.CO2016
Transforming a matrix into a standard form
Akihiro Munemasa, Pritta Etriana Putri
We show that every matrix all of whose entries are in a fixed subgroup of the group of units of a commutative ring with identity is equivalent to a standard form. As a consequence,…