Question

Prove $x^3 = x^2$ in an abelian semigroup given two elements with a specific property

score 118 · Answer 1 · 2023-02-16 16:30:46

118

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Prove $x^3 = x^2$ in an abelian semigroup given two elements with a specific property

Published on 16 Feb 2023 - 16:30

score 55 · Answer 2 · 2023-03-01 17:59:03

55

Views

Find the energy of a partial differential equation

Published on 01 Mar 2023 - 17:59

score 99 · Answer 3 · 2023-03-05 21:13:16

99

Views

Non-trivial semisubgroups of the unit interval?

Published on 05 Mar 2023 - 21:13

score 33 · Answer 4 · 2023-03-06 11:33:40

33

Views

Non-trivial (regular) open semigroups of the open unit interval $(0,1)$?

Published on 06 Mar 2023 - 11:33

score 126 · Answer 5 · 2023-03-06 21:13:57

126

Views

$\mathcal{L}$ Green relation vs $\mathcal{H}$ Green relation

Published on 06 Mar 2023 - 21:13

score 46 · Answer 6 · 2026-03-25 04:39:05

46

Views

Is multiplication by a fixed element an open map in a topological semigroup?

Published on 25 Mar 2026 - 4:39

score 44 · Answer 7 · 2023-03-18 19:06:33

Show that a semi-group (E,T) (I.e., with T associative) satisfying a certain property is a monoid (i.e., possesses a neutral element)

score 37 · Answer 8 · 2026-03-25 04:41:35

37

Views

Why do we have $s.\chi_x=\chi_x$ implies that $s(x)=x u$ for some $u \in \mathfrak{C}^{*, 0}$ in an inverse semigroup?

Published on 25 Mar 2026 - 4:41

score 80 · Answer 9 · 2023-03-22 22:38:37

80

Views

Why does the semigroup of matrices form an epigroup?

Published on 22 Mar 2023 - 22:38

score 209 · Answer 10 · 2026-02-23 08:34:30

209

Views

Does the percentage of associative operations on a finite set decrease monotonically towards zero?

Published on 23 Feb 2026 - 8:34

score 64 · Answer 11 · 2026-03-25 05:06:51

64

Views

Motivation for the study of affine semigroups

Published on 25 Mar 2026 - 5:06

score 37 · Answer 12 · 2023-04-09 10:00:11

37

Views

Proving right identity and left inverse implies group

Published on 09 Apr 2023 - 10:00

score 54 · Answer 13 · 2023-04-25 20:43:48

54

Views

Countable (approximate) generating sets of the semigroup $([0,1],\cdot)$

Published on 25 Apr 2023 - 20:43

score 49 · Answer 14 · 2026-03-26 14:20:26

49

Views

Something similar to Kronecker basis theorem for semigroup

Published on 26 Mar 2026 - 14:20

score 80 · Answer 15 · 2023-05-13 23:56:04

Are there published results providing characterizations of commutative non-cancellative Archimedean semigroups with no idempotents?

List Question

Prove $x^3 = x^2$ in an abelian semigroup given two elements with a specific property

Find the energy of a partial differential equation

Non-trivial semisubgroups of the unit interval?

Non-trivial (regular) open semigroups of the open unit interval $(0,1)$?

$\mathcal{L}$ Green relation vs $\mathcal{H}$ Green relation

Is multiplication by a fixed element an open map in a topological semigroup?

Show that a semi-group (E,T) (I.e., with T associative) satisfying a certain property is a monoid (i.e., possesses a neutral element)

Why do we have $s.\chi_x=\chi_x$ implies that $s(x)=x u$ for some $u \in \mathfrak{C}^{*, 0}$ in an inverse semigroup?

Why does the semigroup of matrices form an epigroup?

Does the percentage of associative operations on a finite set decrease monotonically towards zero?

Motivation for the study of affine semigroups

Proving right identity and left inverse implies group

Countable (approximate) generating sets of the semigroup $([0,1],\cdot)$

Something similar to Kronecker basis theorem for semigroup

Are there published results providing characterizations of commutative non-cancellative Archimedean semigroups with no idempotents?

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