2 papers
math.CO2018
On the Tits cone of a Weyl groupoid
Michael Cuntz, Bernhard Mühlherr, Christian J. Weigel
We translate the axioms of a Weyl groupoid with (not necessarily finite) root system in terms of arrangements. The result is a correspondence between Weyl groupoids permitting a ro…
math.CO2015
Simplicial arrangements on convex cones
Michael Cuntz, Bernhard Mühlherr, Christian J. Weigel
We introduce the notion of a Tits arrangement on a convex open cone as a special case of (infinite) simplicial arrangements. Such an object carries a simplicial structure similar t…