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Plethystic Algebra

Borger, James; Wieland, Ben


The notion of a Z-algebra has a non-linear analogue, whose purpose it is to control operations on commutative rings rather than linear operations on abelian groups. These plethories can also be considered non-linear generalizations of cocommutative bialgebras. We establish a number of category-theoretic facts about plethories and their actions, including a Tannaka-Krein-style reconstruction theorem. We show that the classical ring of Witt vectors, with all its concomitant structure, can be...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Advances in Mathematics
DOI: 10.1016/j.aim.2004.06.006


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