Derivations of the idealization of the incidence module over the finitary incidence algebra

Érica Zancanella Fornaroli, Roger Emanuel Moraes Pezzott

Let $R$ be a unital commutative ring and $X$ a partially ordered set. Let $FI(X,R)$ and $I(X,R)$ be the finitary incidence algebra and the incidence module of $X$ over $R$, respect…