Twisted products of monoids

James East, Robert D. Gray, P. A. Azeef Muhammed +1

A twisting of a monoid $S$ is a map $\Phi :S\times S\to \mathbb{N}$ satisfying the identity $\Phi (a,b)+\Phi (ab,c)=\Phi (a,bc)+\Phi (b,c)$. Together with an additive commutative monoid $M$, and…