Question

Recommend a semigroup theory book.

score 1.8k · Answer 1 · 2013-08-04 20:08:55

1.8k

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Recommend a semigroup theory book.

Published on 04 Aug 2013 - 20:08

score 68 · Answer 2 · 2026-03-27 18:01:42

68

Views

Semigroup which satisfied $(xy)^{\pi} = (xy)^{\pi}x$ and principal right ideals

Published on 27 Mar 2026 - 18:01

score 184 · Answer 3 · 2013-08-11 21:37:44

184

Views

Proving $\mathcal{D}$-class of semigroup.

Published on 11 Aug 2013 - 21:37

score 143 · Answer 4 · 2013-08-13 21:40:29

143

Views

Building factor semigroup w.r.t. $I_n = \{ w \in A^+ : |w| \ge n \}$.

Published on 13 Aug 2013 - 21:40

score 171 · Answer 5 · 2026-03-27 21:34:43

171

Views

Equational theories in commutative idempotent monoids

Published on 27 Mar 2026 - 21:34

score 611 · Answer 6 · 2013-08-22 14:47:41

611

Views

If in a semigroup $S$, $\forall x \exists ! y:xyx=x$, then $S$ is a group

Published on 22 Aug 2013 - 14:47

score 107 · Answer 7 · 2026-03-27 21:43:25

107

Views

Maximal ideals in rings

Published on 27 Mar 2026 - 21:43

score 94 · Answer 8 · 2013-08-29 01:05:11

94

Views

The $\mathcal{J}$- class of a primitive idempotent in a regular semigroup.

Published on 29 Aug 2013 - 1:05

score 253 · Answer 9 · 2026-03-19 22:28:39

253

Views

Does representation theory exists without Groups?

Published on 19 Mar 2026 - 22:28

score 51 · Answer 10 · 2013-08-31 07:07:11

51

Views

Is a direct product $\prod_{\alpha\in{}A}S_\alpha$ of semigroups $S_\alpha$ simple, if all semigroups $S_\alpha$ are simple?

Published on 31 Aug 2013 - 7:07

score 44 · Answer 11 · 2013-09-04 11:33:52

44

Views

Terminology for a weaked vector space

Published on 04 Sep 2013 - 11:33

score 127 · Answer 12 · 2013-09-07 15:49:36

127

Views

A statement about an element $a$ in semigroup S, such that $aS$ containts idempotent and $a=axa$ implies $x=xax$

Published on 07 Sep 2013 - 15:49

score 95 · Answer 13 · 2013-09-08 19:16:51

95

Views

Prove that any completely regular semigroup $S$ satisfies the identities $ab=a(ba)^0b=a(b^0a^0)^0b$, $a,b\in{}S$

Published on 08 Sep 2013 - 19:16

score 1.2k · Answer 14 · 2013-09-09 20:39:29

1.2k

Views

uniqueness of solutions of $ax=b$ and $ya=b$ in a semigroup .

Published on 09 Sep 2013 - 20:39

score 83 · Answer 15 · 2013-09-10 15:29:30

83

Views

Confusing in periodic semigroup

Published on 10 Sep 2013 - 15:29

List Question

Recommend a semigroup theory book.

Semigroup which satisfied $(xy)^{\pi} = (xy)^{\pi}x$ and principal right ideals

Proving $\mathcal{D}$-class of semigroup.

Building factor semigroup w.r.t. $I_n = \{ w \in A^+ : |w| \ge n \}$.

Equational theories in commutative idempotent monoids

If in a semigroup $S$, $\forall x \exists ! y:xyx=x$, then $S$ is a group

Maximal ideals in rings

The $\mathcal{J}$- class of a primitive idempotent in a regular semigroup.

Does representation theory exists without Groups?

Is a direct product $\prod_{\alpha\in{}A}S_\alpha$ of semigroups $S_\alpha$ simple, if all semigroups $S_\alpha$ are simple?

Terminology for a weaked vector space

A statement about an element $a$ in semigroup S, such that $aS$ containts idempotent and $a=axa$ implies $x=xax$

Prove that any completely regular semigroup $S$ satisfies the identities $ab=a(ba)^0b=a(b^0a^0)^0b$, $a,b\in{}S$

uniqueness of solutions of $ax=b$ and $ya=b$ in a semigroup .

Confusing in periodic semigroup

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