Subset Representations and Eigenvalues of the Universal Intertwining Matrix

Published 5 Nov 2020 in math.CO | (2011.02942v2)

Abstract: We solve a combinatorial question concerning eigenvalues of the universal intertwining endomorphism of a subset representation. This is then applied to justify the evaluation of the Eisenbud-Levine-Khimshiashvili (ELK) signature formula for the gradient index at a degenerate star in arXiv:2001.10882

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