Journal of AlgebraVolume 59, Issue 2, August 1979, Pages 434-451The free completely regular semigroup on a setAuthor links open overlay panelA.H CliffordShow moreShareCitehttps://doi.org/10.1016/0021-8693(79)90139-XGet rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1979 Published by Elsevier Inc.