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• #### The Elser Nuclei Sum Revisited ﻿

[OWP-2021-05] (Mathematisches Forschungsinstitut Oberwolfach, 2021-03-16)
Fix a finite undirected graph $\Gamma$ and a vertex $v$ of $\Gamma$. Let $E$ be the set of edges of $\Gamma$. We call a subset $F$ of $E$ $\textit{pandemic}$ if each edge of $\Gamma$ has at least one endpoint that can be ...