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- Anton Kaul
- 2000

A Coxeter group W is said to be rigid if, given any two Coxeter systems (W, S) and (W, S), there is an automorphism ρ : W −→ W such that ρ(S) = S. We consider the class of Coxeter systems (W, S) for which the Coxeter graph Γ S is complete and has only odd edge labels (such a system is said to be of " type K n "). It is shown that if W has a type K n system,… (More)

- Anton Kaul, Matthew E. White
- 2009

Let W be a right-angled Coxeter group. We characterize the centralizer of the Coxeter element of a finite special subgroup of W. As an application , we give a solution to the generalized word problem for Inn(W) in Aut(W).

- ANTON KAUL
- 2006

Let W be a right-angled Coxeter group. We demonstrate a practical solution to the generalized word problem for Inn(W) in Aut(W).

Geometric combinatorialists often study partially ordered sets in which each covering relation has been assigned some sort of label. In this article we discuss how each such labeled poset naturally has a monoid, a group, and a cell complex associated with it. Moreover, when the labeled poset satisfies three simple combinatorial conditions, the connections… (More)

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