Gerhard Roehrle

activity

20072018

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Showing 2018Show all

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math.RT2018

On the Invariants of the Cohomology of Complements of Coxeter Arrangements

J. Matthew Douglass, Goetz Pfeiffer, Gerhard Roehrle

We refine Brieskorn's study of the cohomology of the complement of the reflection arrangement of a finite Coxeter group $W$ . As a result we complete the verification of a conjectur…

math.GR2018

The modality of a Borel subgroup in a simple algebraic group of type $E_{8}$

Simon Goodwin, Peter Mosch, Gerhard Roehrle

Let $G$ be a simple algebraic group over an algebraically closed field $k$ , where $char k$ is either 0 or a good prime for $G$ . We consider the modality $\mathrm{mod}(B…

On the Invariants of the Cohomology of Complements of Coxeter Arrangements

The modality of a Borel subgroup in a simple algebraic group of type E8​

The modality of a Borel subgroup in a simple algebraic group of type $E_{8}$