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math.LO2025
Definability of some -ary Relations Over Second Order kinds of Logics
Simone Costa, Marco Dalai, Stefano Della Fiore +1
We consider the exprissibility in monadic second order logic of certain relations of importance in computer science. For integers and , a -tuple of sequences…
math.CO2025
On relative simple Heffter spaces
Laura Johnson, Lorenzo Mella, Anita Pasotti
In this paper, we introduce the concept of a relative Heffter space which simultaneously generalizes those of relative Heffter arrays and Heffter spaces. Given a subgroup of an…