Cluster algebras from orbifolds
Presenter
October 31, 2012
Keywords:
- algebraic combinatorics
- commutative algebra
- cluster algebra
- positivity
- triangulations
- orbifolds
- hyperbolic geometry
- surface cluster algebra
MSC:
- 13F60
- 13F55
- 13Fxx
- 13-xx
- 57R18
- 57R15
- 57R05
- 57Rxx
Abstract
We will discuss construction of skew-symmetrizable cluster algebras from triangulated surfaces with orbifold points of order two. Almost all properties and constructions concerning algebras from surfaces may be generalized for the orbifold case (e.g. independence results, positivity of cluster variables, sign-coherence of c- and d-vectors, bases).
The talk is based on joint works with Michael Shapiro and Pavel Tumarkin.