Jakob Zimmermann

activity

20152018

most citedCounting Quasi-Idempotent Irreducible Integral Matrices

1 citations · 1 across the 4 of their papers we have counts for

collaborators

7 papers

math.CO2018

Existence of symmetric maximal noncrossing collections of $k$ -element sets

Andrea Pasquali, Erik Thörnblad, Jakob Zimmermann

We investigate the existence of maximal collections of mutually noncrossing $k$ -element subsets of ${1, \dots, n}$ that are invariant under adding $k (mod n)$ to all…

math.RT2018

Extreme representations of semirings

Chih-Whi Chen, Brendan Frisk Dubsky, Helena Jonsson +4

This is a write-up of the discussions during the meetings of the study group on representation theory of semirings which was organized at the Department of Mathematics, Uppsala Uni…

math.RT2018

Simple transitive $2$ -representations of left cell $2$ -subcategories of projective functors for star algebras

Jakob Zimmermann

In this paper we study simple transitive $2$ -representations of certain $2$ -subcategories of the $2$ -category of projective functors over a star algebra. We show that in the simple…

math.RT2017

Simple transitive $2$ -representations of some $2$ -categories of projective functors

Jakob Zimmermann

We show that every simple transitive $2$ -representation of the $2$ -category of projective functors for a certain quotient of the quadratic dual of the preprojective algebra associa…

math.CO2017★ 1 cited

Counting Quasi-Idempotent Irreducible Integral Matrices

Erik Thörnblad, Jakob Zimmermann

Given any polynomial $p$ in $C [X]$ , we show that the set of irreducible matrices satisfying $p (A) = 0$ is finite. In the specific case $p (X) = X^{2} - n X$ , we count the number of irreducib…

math.RT2016

Simple transitive 2-representations of small quotients of Soergel bimodules

Tobias Kildetoft, Marco Mackaay, Volodymyr Mazorchuk +1

In all finite Coxeter types but $I_{2} (12)$ , $I_{2} (18)$ and $I_{2} (30)$ , we classify simple transitive $2$ -rep\-re\-sen\-ta\-ti\-ons for the quotient of the $2$ -category of Soergel bimo…

math.RT2015

Simple transitive $2$ -representations of Soergel bimodules in type $B_{2}$

Jakob Zimmermann

We prove that every simple transitive $2$ -representation of the fiat $2$ -category of Soergel bimodules (over the coinvariant algebra) in type $B_{2}$ is equivalent to a cell $2$ -repr…

Existence of symmetric maximal noncrossing collections of k-element sets

Extreme representations of semirings

Simple transitive 2-representations of left cell 2-subcategories of projective functors for star algebras

Simple transitive 2-representations of some 2-categories of projective functors

Counting Quasi-Idempotent Irreducible Integral Matrices

Simple transitive 2-representations of small quotients of Soergel bimodules

Simple transitive 2-representations of Soergel bimodules in type B2​

Existence of symmetric maximal noncrossing collections of $k$ -element sets

Simple transitive $2$ -representations of left cell $2$ -subcategories of projective functors for star algebras

Simple transitive $2$ -representations of some $2$ -categories of projective functors

Simple transitive $2$ -representations of Soergel bimodules in type $B_{2}$