Locally full HNN extensions of inverse semigroups
2001 ◽
Vol 70
(2)
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pp. 235-272
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AbstractWe investigate a locally full HNN extension of an inverse semigroup. A normal form theorem is obtained and applied to the word problem. We construct a tree and show that a maximal subgroup of a locally full HNN extension acts on the tree without inversion. Bass-Serre theory is employed to obtain a group presentation of the maximal subgroup as a fundamental group of a certain graph of groups associated with the D-structure of the original semigroup.
2007 ◽
Vol 142
(1)
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pp. 25-39
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1999 ◽
Vol 09
(05)
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pp. 555-596
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2005 ◽
Vol 15
(03)
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pp. 423-436
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2019 ◽
Vol 30
(02)
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pp. 217-243
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1997 ◽
Vol 07
(05)
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pp. 605-624
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2009 ◽
Vol 19
(02)
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pp. 129-143
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2000 ◽
Vol 130
(3)
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pp. 603-609
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