A Reiterman theorem for pseudovarieties of finite first-order structures
Résumé
We extend Reiterman's theorem to first order structures: a class of finite first-order structures is a pseudovariety if and only if it is defined by a set of identities in a certain relatively free profinite structure (pseudoidentities).
Origine | Fichiers produits par l'(les) auteur(s) |
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