List questions from semigroups

84

Views

$\langle a\rangle \simeq \langle b \rangle$ if and only if $a$ and $b$ have the same index and period

Published on 28 Mar 2026 - 20:56

59

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Weaker version of inverse semigroup

Published on 11 Mar 2021 - 4:33

210

Views

Is all algebraic system is monoid?

Published on 29 Mar 2026 - 2:29

171

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A binary operation $f$ that is associative and satisfies $f(f(x,y),x)\approx x$

Published on 13 Mar 2021 - 11:29

208

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Let $G$ be a set with an associative operation defined on it. Show that $G$ is group.

Published on 18 Mar 2021 - 17:16

98

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Relationship between subsemigroups of GL2 and SL2

Published on 23 Mar 2021 - 19:51

200

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Do quotient inverse semigroups exist?

Published on 25 Mar 2026 - 7:39

39

Views

Left Folner sequence for a semigroup

Published on 23 Feb 2026 - 11:26

38

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Is there anything wrong with this proof of uniqueness of inverses?

Published on 04 Apr 2021 - 21:35

42

Views

$\mathcal{D}-$class in a semigroup is a union of $\mathcal{L}$-classes

Published on 22 Mar 2026 - 14:30

460

Views

Good book for self-study of Magmas/Semigroups/etc.?

Published on 23 Feb 2026 - 17:24

137

Views

semigroup in which Green's relations are different

Published on 22 Mar 2026 - 20:31

194

Views

Subsemigroup of free semigroup that is not free

Published on 18 Apr 2021 - 5:56

120

Views

infinite monoid H that is not a free monoid and contains a free monoid as a submonoid

Published on 29 Mar 2026 - 3:35

152

Views

Embedding a semigroup into a monoid

Published on 29 Mar 2026 - 4:11

List Question

$\langle a\rangle \simeq \langle b \rangle$ if and only if $a$ and $b$ have the same index and period

Weaker version of inverse semigroup

Is all algebraic system is monoid?

A binary operation $f$ that is associative and satisfies $f(f(x,y),x)\approx x$

Let $G$ be a set with an associative operation defined on it. Show that $G$ is group.

Relationship between subsemigroups of GL2 and SL2

Do quotient inverse semigroups exist?

Left Folner sequence for a semigroup

Is there anything wrong with this proof of uniqueness of inverses?

$\mathcal{D}-$class in a semigroup is a union of $\mathcal{L}$-classes

Good book for self-study of Magmas/Semigroups/etc.?

semigroup in which Green's relations are different

Subsemigroup of free semigroup that is not free

infinite monoid H that is not a free monoid and contains a free monoid as a submonoid

Embedding a semigroup into a monoid

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