Question

How can i create a Rees-matrix semigroup?

score 68 · Answer 1 · 2021-04-28 10:33:09

68

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How can i create a Rees-matrix semigroup?

Published on 28 Apr 2021 - 10:33

score 73 · Answer 2 · 2026-03-27 04:38:31

73

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an infinite monoid that is not free monoid and does not contain any free monoid

Published on 27 Mar 2026 - 4:38

score 64 · Answer 3 · 2021-05-09 20:57:26

64

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Proving that a set with associative binary operation and satisfying two other given conditions, is a group.

Published on 09 May 2021 - 20:57

score 133 · Answer 4 · 2021-05-11 19:48:39

133

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Groups acting on semigroups

Published on 11 May 2021 - 19:48

score 109 · Answer 5 · 2026-02-23 17:27:35

109

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if $\cdot$ and $\odot$ are associative operations on $\mathbb{Z}$ when is the sum $(\cdot + \odot)$ associative?

Published on 23 Feb 2026 - 17:27

score 71 · Answer 6 · 2026-03-26 19:15:47

71

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Polynomials with exponents in numerical semigroup

Published on 26 Mar 2026 - 19:15

score 127 · Answer 7 · 2026-03-25 04:39:37

127

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The rank of a semigroup

Published on 25 Mar 2026 - 4:39

score 121 · Answer 8 · 2026-03-29 05:44:12

121

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Prove for a semigroup $S$ that $SeS = SfS$ is equivalent to the existence of $x, y \in S$ such that $xy = e$ and $yx = f$

Published on 29 Mar 2026 - 5:44

score 354 · Answer 9 · 2026-03-22 13:57:37

354

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Example of an infinite semigroup where $\mathcal{D} \neq \mathcal{J}$

Published on 22 Mar 2026 - 13:57

score 167 · Answer 10 · 2021-06-06 08:56:49

167

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What is the name of an algebraic structure between semi-group and group?

Published on 06 Jun 2021 - 8:56

score 56 · Answer 11 · 2026-03-25 09:31:56

56

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Rank of the finite semigroup

Published on 25 Mar 2026 - 9:31

score 162 · Answer 12 · 2026-02-23 17:25:00

162

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How many non-isomorphic algebraic structures (i.e. magmas, monoids, groups etc.) are there with countably infinite order?

Published on 23 Feb 2026 - 17:25

score 59 · Answer 13 · 2021-06-09 06:56:22

59

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Symmetric Numerical Semigroups for a fixed Embedding Dimension

Published on 09 Jun 2021 - 6:56

score 100 · Answer 14 · 2026-03-25 07:43:31

100

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A question about v-prehomomorphisms of inverse semigroups

Published on 25 Mar 2026 - 7:43

score 18 · Answer 15 · 2026-03-17 21:29:41

18

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Minimal Ideals In LA Semigroup

Published on 17 Mar 2026 - 21:29

List Question

How can i create a Rees-matrix semigroup?

an infinite monoid that is not free monoid and does not contain any free monoid

Proving that a set with associative binary operation and satisfying two other given conditions, is a group.

Groups acting on semigroups

if $\cdot$ and $\odot$ are associative operations on $\mathbb{Z}$ when is the sum $(\cdot + \odot)$ associative?

Polynomials with exponents in numerical semigroup

The rank of a semigroup

Prove for a semigroup $S$ that $SeS = SfS$ is equivalent to the existence of $x, y \in S$ such that $xy = e$ and $yx = f$

Example of an infinite semigroup where $\mathcal{D} \neq \mathcal{J}$

What is the name of an algebraic structure between semi-group and group?

Rank of the finite semigroup

How many non-isomorphic algebraic structures (i.e. magmas, monoids, groups etc.) are there with countably infinite order?

Symmetric Numerical Semigroups for a fixed Embedding Dimension

A question about v-prehomomorphisms of inverse semigroups

Minimal Ideals In LA Semigroup

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