Darij Grinberg

activity

20082026

most citedHopf Algebras in Combinatorics

120 citations · 245 across the 69 of their papers we have counts for

collaborators

Showing 2019 · math.RAShow all

2 papers · 2 filters

math.RA2019

Commutators, matrices and an identity of Copeland

Darij Grinberg

Given two elements $a$ and $b$ of a noncommutative ring, we express $(ba)^{n}$ as a "row vector times matrix times column vector" product, where the matrix is the $n$ -th…

math.RA2019★ 1 cited

A double Sylvester determinant

Darij Grinberg

Given two $(n + 1) \times (n + 1)$ -matrices $A$ and $B$ over a commutative ring, and some $k \in {0, 1, \dots, n}$ , we consider the $\dbinom{n}{k}\time…