New posts in Semigroups

Are all commutative, associative binary operations isomorphic to addition?

Existence of a neutral element in set with an associative internal law

Does there exist a non-commutative algebraic structure with the following properties?

How to show convolution is associative?

The monoid of fractions associated with the submonoid of cancellable elements of a commutative monoid E

What is difference between idempotent magma and unital magma?

Why any countable subset of $\mathbb{R}→\mathbb{R}$ is generated by a finite set under composition?

A binary operation on $G$ satisfies $a\cdot(b\cdot c)=(a\cdot b)\cdot (a\cdot c)$ and has an identity, is it a group?

Are there $f:\mathbb{R}^{+}\times\mathbb R^+\rightarrow\mathbb{R}^{+}$ associative and not conjugate to the addition?

Semigroups with no morphisms between them