Question

Is a monoid a magma?

score 857 · Answer 1 · 2026-03-24 14:53:29

857

Views

Is a monoid a magma?

Published on 24 Mar 2026 - 14:53

score 253 · Answer 2 · 2016-09-23 16:09:52

253

Views

Why is identity element of monoid defined as morphism?

Published on 23 Sep 2016 - 16:09

score 305 · Answer 3 · 2016-09-27 10:30:39

305

Views

Trying to understand monoids in Set as general monoid in monoidal category

Published on 27 Sep 2016 - 10:30

score 37 · Answer 4 · 2026-03-25 06:11:04

37

Views

Do (pseudo)varieties closed under wreath product have a name?

Published on 25 Mar 2026 - 6:11

score 798 · Answer 5 · 2026-03-25 19:05:23

798

Views

Existence of an idempotent element in a finite monoid.

Published on 25 Mar 2026 - 19:05

score 265 · Answer 6 · 2016-10-18 19:25:07

265

Views

Equalizer in a Monoid as Category?

Published on 18 Oct 2016 - 19:25

score 342 · Answer 7 · 2016-10-31 11:52:49

342

Views

Proving that binary products exists

Published on 31 Oct 2016 - 11:52

score 369 · Answer 8 · 2026-02-23 06:39:31

369

Views

Elegant approach to coproducts of monoids and magmas - does everything work without units?

Published on 23 Feb 2026 - 6:39

score 448 · Answer 9 · 2026-02-23 06:40:30

448

Views

In the coproduct of monoids $A\amalg B$, suppose two words have the same suffix in $B$. Can it be cancelled?

Published on 23 Feb 2026 - 6:40

score 908 · Answer 10 · 2016-11-07 22:31:50

908

Views

Let $R$ be a ring. Define a circle composition ◦ in R by $a ◦ b =a+b-ab$, $a, b ∈ R$.

Published on 07 Nov 2016 - 22:31

score 108 · Answer 11 · 2016-11-17 15:35:59

108

Views

Prove that the following set of equivalence classes with binary option is a monoid

Published on 17 Nov 2016 - 15:35

score 311 · Answer 12 · 2016-11-22 08:47:39

311

Views

Monoid / semigroup with cancellation property $ ab=ac\Rightarrow b = c,$ $\ ba = ca\Rightarrow b = c$

Published on 22 Nov 2016 - 8:47

score 50 · Answer 13 · 2016-11-25 19:32:14

50

Views

Every monoid admits a surjection from a free monoid?

Published on 25 Nov 2016 - 19:32

score 44 · Answer 14 · 2016-11-29 10:10:03

44

Views

infinity of abelian submonoid

Published on 29 Nov 2016 - 10:10

score 175 · Answer 15 · 2016-11-29 19:48:00

175

Views

Krull dimension of abelian group ring equals that of generating submonoid ring

Published on 29 Nov 2016 - 19:48

List Question

Is a monoid a magma?

Why is identity element of monoid defined as morphism?

Trying to understand monoids in Set as general monoid in monoidal category

Do (pseudo)varieties closed under wreath product have a name?

Existence of an idempotent element in a finite monoid.

Equalizer in a Monoid as Category?

Proving that binary products exists

Elegant approach to coproducts of monoids and magmas - does everything work without units?

In the coproduct of monoids $A\amalg B$, suppose two words have the same suffix in $B$. Can it be cancelled?

Let $R$ be a ring. Define a circle composition ◦ in R by $a ◦ b =a+b-ab$, $a, b ∈ R$.

Prove that the following set of equivalence classes with binary option is a monoid

Monoid / semigroup with cancellation property $ ab=ac\Rightarrow b = c,$ $\ ba = ca\Rightarrow b = c$

Every monoid admits a surjection from a free monoid?

infinity of abelian submonoid

Krull dimension of abelian group ring equals that of generating submonoid ring

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