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On The Cohomology Of Spatial Polygons In Euclidean Spaces, Vehbi Emrah Paksoy
On The Cohomology Of Spatial Polygons In Euclidean Spaces, Vehbi Emrah Paksoy
Mathematics Faculty Articles
Space of spatial polygons in Euclidean spaces has been studied extensively in [3, 1, 2]. There is a beautiful description of cohomology in [1]. In this paper we introduce another, easy to compute method to obtain the cohomology without using toric variety arguments. We also give a criterion for a polygon space to be Fano, thus, having ample anticanonical class.
Maximal Clifford Semigroups Of Matrices, Edmond W. H. Lee
Maximal Clifford Semigroups Of Matrices, Edmond W. H. Lee
Mathematics Faculty Articles
All maximal Clifford semigroups of matrices are identified up to isomorphism. If the ground field of the matrices is finite, then there exists a unique Clifford semigroup of maximum order.