Question

How can a monoid be a category with just one object?

score 1.1k · Answer 1 · 2026-03-17 10:51:45

1.1k

Views

How can a monoid be a category with just one object?

Published on 17 Mar 2026 - 10:51

score 359 · Answer 2 · 2018-03-10 18:53:27

359

Views

Functor from single-object category $C$ formed by a monoid to the $\mathbf{SET}$-category? How to map and preserve morphisms?

Published on 10 Mar 2018 - 18:53

score 118 · Answer 3 · 2026-03-16 18:43:55

118

Views

Equivalent Relation

Published on 16 Mar 2026 - 18:43

score 81 · Answer 4 · 2026-03-17 23:37:08

81

Views

What can we possibly get out of the monoidal action of this function?

Published on 17 Mar 2026 - 23:37

score 33 · Answer 5 · 2018-03-31 19:51:49

33

Views

Why multiplication isn't the monoid of number instead of summation since both operations are monoidal?

Published on 31 Mar 2018 - 19:51

score 67 · Answer 6 · 2026-03-24 19:01:24

67

Views

Term for elements of a monoid in a corresponding monid ring

Published on 24 Mar 2026 - 19:01

score 352 · Answer 7 · 2026-03-16 15:57:51

352

Views

Is there a name for an algebraic structure with only "addition" and "truncated subtraction"?

Published on 16 Mar 2026 - 15:57

score 204 · Answer 8 · 2018-04-11 18:40:46

204

Views

The set of matrices of form $A^3+B^3$ with multiplication is a monoid

Published on 11 Apr 2018 - 18:40

score 249 · Answer 9 · 2026-03-17 11:45:15

249

Views

What is the “on morphism” part of a free functor?

Published on 17 Mar 2026 - 11:45

score 166 · Answer 10 · 2026-03-17 01:36:29

166

Views

Submonoid of the set of integers

Published on 17 Mar 2026 - 1:36

score 625 · Answer 11 · 2026-03-17 19:28:11

625

Views

$f (e_G )=e_H $ is necessary for Monoid homomorphisms

Published on 17 Mar 2026 - 19:28

score 802 · Answer 12 · 2026-03-19 16:55:47

802

Views

The $2$-category of monoids

Published on 19 Mar 2026 - 16:55

score 173 · Answer 13 · 2026-03-17 21:12:04

173

Views

Intersection of a cone in the plane with lattice is finitely generated

Published on 17 Mar 2026 - 21:12

score 210 · Answer 14 · 2026-03-24 20:30:42

210

Views

What is funny about monoids?

Published on 24 Mar 2026 - 20:30

score 305 · Answer 15 · 2018-05-13 15:03:35

305

Views

Is any group the automorphism group of some (commutative) monoid?

Published on 13 May 2018 - 15:03

List Question

How can a monoid be a category with just one object?

Functor from single-object category $C$ formed by a monoid to the $\mathbf{SET}$-category? How to map and preserve morphisms?

Equivalent Relation

What can we possibly get out of the monoidal action of this function?

Why multiplication isn't the monoid of number instead of summation since both operations are monoidal?

Term for elements of a monoid in a corresponding monid ring

Is there a name for an algebraic structure with only "addition" and "truncated subtraction"?

The set of matrices of form $A^3+B^3$ with multiplication is a monoid

What is the “on morphism” part of a free functor?

Submonoid of the set of integers

$f (e_G )=e_H $ is necessary for Monoid homomorphisms

The $2$-category of monoids

Intersection of a cone in the plane with lattice is finitely generated

What is funny about monoids?

Is any group the automorphism group of some (commutative) monoid?

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