W. Mlotkowski

activity

20092022

most citedCauchy-Stieltjes families with polynomial variance functions and generalized orthogonality

17 citations · 62 across the 14 of their papers we have counts for

collaborators

Showing 2019 · math.COShow all

2 papers · 2 filters

math.CO2019

Some relatives of the Catalan sequence

Elżbieta Liszewska, Wojciech Młotkowski

We study a family of sequences $c_{n} (a_{2}, \dots, a_{r})$ , where $r \geq 2$ and $a_{2}, \dots, a_{r}$ are real parameters. We find a sufficient condition for positive definiteness of the sequen…

math.CO2019

Permutations of type $B$ with fixed number of descents and minus signs

Katarzyna Kril, Wojciech Młotkowski

We study three dimensional array of numbers $B (n, k, j)$ , $0 \leq j, k \leq n$ , where $B (n, k, j)$ is the number of type $B$ permutations of order $n$ with $k$ descents and $j$ minus signs.…

Some relatives of the Catalan sequence

Permutations of type B with fixed number of descents and minus signs

Permutations of type $B$ with fixed number of descents and minus signs