Question

Is the free monoid on $n$ generators just the semigroup on $n$ generators adjoined with an identity element?

score 49 · Answer 1 · 2023-10-10 20:26:45

49

Views

Is the free monoid on $n$ generators just the semigroup on $n$ generators adjoined with an identity element?

Published on 10 Oct 2023 - 20:26

score 137 · Answer 2 · 2026-03-25 19:03:02

137

Views

Monad of possibly infinite lists

Published on 25 Mar 2026 - 19:03

score 49 · Answer 3 · 2023-10-16 04:56:20

49

Views

How to prove that (ℤ\{-17, -7, -6, -3, -2, -1, 2, 3, 6, 7, 17, 2022, 2023}, ×) is a monoid?

Published on 16 Oct 2023 - 4:56

score 114 · Answer 4 · 2023-10-17 23:47:47

114

Views

Category of Non-Negative Integers and Addition

Published on 17 Oct 2023 - 23:47

score 47 · Answer 5 · 2026-03-25 14:26:08

47

Views

definition of group completion of semirings

Published on 25 Mar 2026 - 14:26

score 68 · Answer 6 · 2023-11-11 11:54:58

68

Views

If a submonoid is in the union of two submonoids, is it in one of them?

Published on 11 Nov 2023 - 11:54

score 227 · Answer 7 · 2023-11-17 14:12:59

227

Views

When does a monoid admit a ring structure?

Published on 17 Nov 2023 - 14:12

score 261 · Answer 8 · 2023-11-23 06:24:27

261

Views

Is this Monoid Finitely Generated?

Published on 23 Nov 2023 - 6:24

score 152 · Answer 9 · 2023-11-28 13:48:08

152

Views

Simple examples of comonoids

Published on 28 Nov 2023 - 13:48

score 14 · Answer 10 · 2023-12-06 17:06:32

14

Views

Separating a primitive word of $A^$ from its proper prefixes by a monoid morphism from $A^$ to $\mathbb Z$.

Published on 06 Dec 2023 - 17:06

score 54 · Answer 11 · 2023-12-07 05:15:53

54

Views

Monoid Element with Unique Left Inverse But No Right Inverse?

Published on 07 Dec 2023 - 5:15

score 32 · Answer 12 · 2023-12-13 09:33:37

32

Views

Is there a name for monoids where this set is finite

Published on 13 Dec 2023 - 9:33

score 47 · Answer 13 · 2026-03-26 13:49:34

47

Views

Subgroups in semigroups vs monoids

Published on 26 Mar 2026 - 13:49

score 54 · Answer 14 · 2024-01-12 01:13:51

54

Views

Standard terminology to refer to the monoids of small order

Published on 12 Jan 2024 - 1:13

score 28 · Answer 15 · 2024-01-12 18:43:25

28

Views

Two almost disjoint submonoids whose union is the whole monoid

Published on 12 Jan 2024 - 18:43

List Question

Is the free monoid on $n$ generators just the semigroup on $n$ generators adjoined with an identity element?

Monad of possibly infinite lists

How to prove that (ℤ\{-17, -7, -6, -3, -2, -1, 2, 3, 6, 7, 17, 2022, 2023}, ×) is a monoid?

Category of Non-Negative Integers and Addition

definition of group completion of semirings

If a submonoid is in the union of two submonoids, is it in one of them?

When does a monoid admit a ring structure?

Is this Monoid Finitely Generated?

Simple examples of comonoids

Separating a primitive word of $A^$ from its proper prefixes by a monoid morphism from $A^$ to $\mathbb Z$.

Monoid Element with Unique Left Inverse But No Right Inverse?

Is there a name for monoids where this set is finite

Subgroups in semigroups vs monoids

Standard terminology to refer to the monoids of small order

Two almost disjoint submonoids whose union is the whole monoid

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