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Z-gradings of full support on the Grassmann algebra

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Author(s):
Brandao, Antonio ; Fidelis, Claudemir ; Guimaraes, Alan
Total Authors: 3
Document type: Journal article
Source: Journal of Algebra; v. 601, p. 22-pg., 2022-07-01.
Abstract

Let E be the infinite dimensional Grassmann algebra over a field F of characteristic zero. In this paper we investigate the structures of Z-gradings on E of full support. Using methods of elementary number theory, we describe the Z graded polynomial identities for the so-called 2-induced Z-gradings on E of full support. As a consequence of this fact we provide examples of Z-gradings on E which are PI-equivalent but not Z-isomorphic. This is the first example of graded algebras with infinite support that are PI-equivalent, but non isomorphic as graded algebras. We also present the notion of central Z-gradings on E and we show that their Z-graded polynomial identities are closely related to the Z2-graded polynomial identities of E. (C)& nbsp;2022 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 19/12498-0 - Graded polynomial identities and identity with trace, and invariant theory
Grantee:Claudemir Fideles Bezerra Júnior
Support Opportunities: Scholarships in Brazil - Post-Doctoral