activity
20182020
collaborators

6 papers

math.QA2020

The Grothendieck Ring of a Family of Spherical Categories

Zhengwei Liu, Christopher Ryba

The first author constructed a -parameterized spherical category $\sC$ over in [Liu15], whose simple objects are labelled by all Young diagrams. In this paper, w…

math.RT2020

Littlewood Complexes for Symmetric Groups

Christopher Ryba

We construct a complex resolving the irreducible representations of the symmetric groups by representations restricted from $GL_n…

math.RT2019

Indecomposable Objects of in Terms of Exterior Powers of the Tautological Object and its Dual

Christopher Ryba

The purpose of this short note is to understand the Grothendieck ring of the Deligne category . We give a formula for the class of an indecomposable o…

math.RT2019

A Permutation Module Deligne Category and Stable Patterns of Kronecker Coefficients

Christopher Ryba

Deligne's category is a tensor category depending on a parameter "interpolating" the categories of representations of the symmetric groups . We…

math.RT2018

Resolving Irreducible -Modules by Modules Restricted from

Christopher Ryba

We construct a resolution of irreducible complex representations of the symmetric group by restrictions of representations of (where is the subgroup…

math.CO2018

An Answer to a Question of Zeilberger and Zeilberger about Fractional Counting of Partitions

Christopher Ryba

We answer a question of Zeilberger and Zeilberger about certain partition statistics.