J. Kosakowska

activity

20182020

collaborators

4 papers

math.RT2020

The existence of Hall polynomials for $x^{2}$ -bounded invariant subspaces of nilpotent linear operators

Stanisław Kasjan, Justyna Kosakowska

We prove the existence of Hall polynomials for $x^{2}$ -bounded invariant subspaces of nilpotent linear operators.

math.RT2020

Combinatorial algorithms for binary operations on LR-tableaux with entries equal to 1 with applications to nilpotent linear operators

Mariusz Kaniecki, Justyna Kosakowska

In the paper we investigate an algorithmic associative binary operation $*$ on the set $L R_{1}$ of Littlewood-Richardson tableaux with entries equal to one. We extend $*$ t…

math.RT2019

Finite direct sums of cyclic embeddings

Justyna Kosakowska, Markus Schmidmeier

In this paper we generalize Kaplansky's combinatorial characterization of the isomorphism types of embeddings of a cyclic subgroup in a finite abelian group given in his 1951 book…

math.RT2018

Applications of Littlewood-Richardson tableaux to computing generic extension of semisimple invariant subspaces of nilpotent linear operators