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Abstract:We extend discrete Morse-Bott theory to the setting of loop-free (or acyclic) categories. First of all, we state a homological version of Quillen's Theorem A in this context and introduce the notion of cellular categories. Second, we present a notion of vector field for loop-free categories. Third, we prove a homological collapsing theorem in the absence of critical objects in order to obtain the Morse inequalities. Examples are provided through the exposition. This answers partially a question by T. John: whether there is a Morse theory for loop-free (or acyclic) categories? [14].
From: David Mosquera-Lois [view email]
[v1]
Tue, 13 Jul 2021 16:01:49 UTC (26 KB)
[v2]
Thu, 18 Jun 2026 09:42:10 UTC (1 KB) (withdrawn)
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