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References to 'regular semigroup'
1. a characterization of groups by yark
2. bicyclic semigroup by mclase
3. cancellative semigroup by yark
4. completely simple semigroup by mathcam
5. examples of semigroups by CWoo
6. I-semigroup by Mazzu
7. McAlister covering theorem by mathcam
8. presentation of inverse monoids and inverse semigroups by Mazzu
9. rational set by CWoo
10. regular expression by CWoo
11. Sch\"{u}tzenberger graph by Mazzu
12. semigroup with two elements by rspuzio
13. subsemigroup of a cyclic semigroup by CWoo
14. subsemigroup,, submonoid,, and subgroup by mclase
15. symmetric inverse semigroup by Mazzu
16. theory of formal languages by rspuzio
17. Wagner congruence by Mazzu
18. Wagner-Preston representation theorem by Mazzu
19. word problem by Mazzu