On free products of completely regular semigroups
1994 ◽
Vol 56
(2)
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pp. 212-231
Keyword(s):
AbstractThe free product *CRSi of an arbitrary family of disjoint completely simple semigroups {Si}i∈i, within the variety CR of completely regular semigroups, is described by means of a theorem generalizing that of Kaďourek and Polák for free completely regular semigroups. A notable consequence of the description is that all maximal subgroups of *CRSi are free, except for those in the factors Si themselves. The general theorem simplifies in the case of free CR-products of groups and, in particular, free idempotent-generated completely regular semigroups.
2013 ◽
Vol 94
(3)
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pp. 397-416
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1997 ◽
Vol 40
(3)
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pp. 457-472
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1973 ◽
Vol 14
(1)
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pp. 27-49
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1985 ◽
Vol 38
(3)
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pp. 372-393
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2019 ◽
Vol 29
(08)
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pp. 1383-1407
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1981 ◽
Vol 88
(3-4)
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pp. 293-313
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1983 ◽
Vol 35
(2)
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pp. 227-235
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