Monday, November 22, 2021

Monday, November 22, 2021 — 11:30 to 11:30 AM EST

Title: Switching Equivalence on the Grassmannian

Speaker: Emily King Affiliation: Colorado State University Zoom: Contact Soffia Arnadottir

Abstract:

When constructing configurations of subspaces with desirable properties, one might ask if the configuration is indeed "new.''  It has been known for about 50 years that Gram matrices of equiangular vectors in real Euclidean space correspond to finite simple graphs via the Seidel adjacency matrix, and the collections of such vectors which span the same lines correspond to switching equivalence classes of graphs.

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