Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/43882
Title: A NOTE ON PSEUDOVARIETIES OF COMPLETELY REGULAR SEMIGROUPS
Authors: Almeida, Jorge 
Costa, Alfredo 
Issue Date: 2015
Publisher: Cambridge University Press
Project: info:eu-repo/grantAgreement/FCT/COMPETE/132987/PT 
Abstract: A paper of Almeida and Trotter [‘The pseudoidentity problem and reducibility for completely regular semigroups’, Bull. Aust. Math. Soc.63 (2001), 407–433] makes essential use of free profinite semigroupoids over profinite graphs with infinitely many vertices. It has since been shown that such structures must be handled with great care. In this note, it is verified that the required properties hold for the profinite graphs considered by Almeida and Trotter, thereby filling the gaps in the proof.
URI: http://hdl.handle.net/10316/43882
Other Identifiers: 10.1017/S0004972715000532
DOI: 10.1017/S0004972715000532
Rights: embargoedAccess
Appears in Collections:I&D CMUC - Artigos em Revistas Internacionais

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