Cancellativity is undecidable for automatic semigroups

Alan J. Cain

Research output: Contribution to journalArticlepeer-review

Abstract

Via an encoding of the Modified Post's Correspondence Problem, this paper shows that it is undecidable whether an automatic semigroup is cancellative.

Original languageEnglish
Pages (from-to)285-295
Number of pages11
JournalQuarterly Journal of Mathematics
Volume57
DOIs
Publication statusPublished - Sept 2006

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