Érica Z. Fornaroli

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20222026

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math.RA2022

Classification of involutions on finitary incidence algebras of non-connected posets

Érica Zancanella Fornaroli, Roger Emanuel Moraes Pezzott

Let $F I (X, K)$ be the finitary incidence algebra of a non-connected partially ordered set $X$ over a field $K$ of characteristic different from $2$ . For the case where every multipl…

math.RA2022

Commutativity preservers of incidence algebras

Érica Z. Fornaroli, Mykola Khrypchenko, Ednei A. Santulo

Let $I (X, K)$ be the incidence algebra of a finite connected poset $X$ over a field $K$ and $D (X, K)$ its subalgebra consisting of diagonal elements. We describe the bijective linear…