List questions from semigroup-homomorphism | MathQA

Semigroup divisibility, transitivity property

Published on 11 Apr 2026 - 10:44

Idempotent endomorphism on finite monogenic monoid onto its subgroup

Published on 28 Mar 2026 - 4:40

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 25 Mar 2026 - 8:13

Is the graph of the following type possible?

Published on 25 Mar 2026 - 8:09

On an Isomorphism of Semigroup Rings via Congruence Classes

Published on 25 Mar 2026 - 8:10

A question about v-prehomomorphisms of inverse semigroups

Published on 25 Mar 2026 - 7:43

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

Published on 25 Mar 2026 - 8:12

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

Published on 25 Mar 2026 - 9:50

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

Published on 25 Mar 2026 - 8:13

When does a semigroup homomorphism preserve identities on monoids?

Published on 25 Mar 2026 - 8:07