Strict 2-Groups are Crossed Modules

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arxiv 0812.1464 v1 pith:VD6LJDIH submitted 2008-12-08 math.CT

Sven-S. Porst This is my paper · ORCID

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keywords crossedgroupsmodulesstrictcategoriesequivalenceexplicitintroduced

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The 2-categories of strict 2-groups and crossed modules are introduced and their 2-equivalence is made explicit.

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On coherent Hopf 2-algebras
math.QA 2020-05 unverdicted novelty 4.0 of 10

Constructs coherent Hopf 2-algebras via Hopf coquasigroups relaxing coassociativity, generalizing prior results, with examples from quasi-coassociative cases and Cayley algebra function algebras.