New posts in Semigroups And Monoids

On functors preserving monoid objects

Nielsen-Schreier theorem for monoids

Semi group of polynomials which all roots lie on the unit circle

Identifying a group without 2-torsion

When $X \times Y \cong X \times Z$ implies $Y \cong Z$ (in the category of finite topological spaces)

Non-density of invertible elements in $\ell_1(\mathbb{N}_0)$

Sets of matrices which are irreducible but not strongly irreducible

Define Turing machine with algebraic concepts/structures

Realizing a monoid as $\mathrm{End}(G)$ for some graph $G$

What's the current state of one-rule semi-Thue system termination problem?