Ein Assoziativitätskriterium vom Foulis-Holland-Typ.
Ein neues Axiomensystem für Boolesche Verbände.
Eine Charakterisierung der Boole'schen Algebra zu einer ...-direkten Zerlegung.
Elementary equivalence of lattices of open sets definable in o-minimal expansions of real closed fields
We prove that the boolean algebras of sets definable in elementarily equivalent o-minimal expansions of real closed fields are back-and-forth equivalent, and in particular elementarily equivalent, in the language of boolean algebras with new predicates indicating the dimension, Euler characteristic and open sets. We also show that the boolean algebra of semilinear subsets of [0,1]ⁿ definable in an o-minimal expansion of a real closed field is back-and-forth equivalent to the boolean algebra of definable...
Embedding of free Boolean algebras in complete Boolean algebras
Embeddings into 𝓟(ℕ)/fin and extension of automorphisms
Given a Boolean algebra 𝔹 and an embedding e:𝔹 → 𝓟(ℕ)/fin we consider the possibility of extending each or some automorphism of 𝔹 to the whole 𝓟(ℕ)/fin. Among other things, we show, assuming CH, that for a wide class of Boolean algebras there are embeddings for which no non-trivial automorphism can be extended.
Equational compactness in infinitary algebras
Equational Theories of Varieties defined by P-compatible Identities of Boole'an Algebras
Errata : «Facteurs et plans. I : Structure de finesse»
Extension of Boolean homomorphisms with bounding semimorphisms.
Extensions dans les treillis
Extensions of mappings of finite Boolean algebras to homomorphisms