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math.CO2026
Combinatorial twisted bialgebras and combinatorial twisted double bialgebras
Lo{ï}c Foissy
We provide in this text a new framework for a family of combinatorial Hopf algebras. We adopt for this the language of species and twisted bialgebras (also known as Hopf monoids).…
math.CO2026
Bialgebraic structures on boolean functions
Loïc Foissy
We study several bialgebraic structures on boolean functions, that is to say maps defined on the set of subsets of a finite set , taking the value on . Examples o…