List questions from semigroup-homomorphism | MathQA

Semigroup divisibility, transitivity property

Published on 22 Mar 2026 - 7:28

Idempotent endomorphism on finite monogenic monoid onto its subgroup

Published on 08 Mar 2026 - 9:12

Functions on a cover with the property $f(U \cap V) = f(U)\,f(V)$

Published on 04 Dec 2017 - 4:55

Qutoient monoid of kernel pair of monoid homomorphism between multiplicative naturals to additive naturals (sum of prime numbers).

Published on 17 Aug 2020 - 6:21

Is the graph of the following type possible?

Published on 22 Mar 2026 - 12:09

On an Isomorphism of Semigroup Rings via Congruence Classes

Published on 05 Feb 2021 - 18:18

A question about v-prehomomorphisms of inverse semigroups

Published on 13 Jun 2021 - 4:36

First isomorphism theorem for inverse semigroups together with v-prehomomorphisms?

Published on 16 Jul 2021 - 23:17

Prove simplified version of Rees matrix theorem (for completely simple semigroups, without 0).

Published on 30 Nov 2021 - 15:34

Show that if $f$ is a homomorphism then the set of invertible elements $M^\times$ is commutative

Published on 13 Mar 2022 - 18:05

When does a semigroup homomorphism preserve identities on monoids?

Published on 24 Jan 2023 - 19:58