Sacks forcing collapses to
We shall prove that Sacks algebra is nowhere -distributive, which implies that Sacks forcing collapses to .
Saturated Boolean Algebras With Ultrafilters
Saturated Boolean algebras with ultrafilters.
Semi-Boolean algebras and their applications to intuitionistic logic with dual operations
Separation properties and Boolean powers
Sequential convergences in Boolean algebras
Sequential convergences on Boolean algebras defined by systems of maximal filters
We study sequential convergences defined on a Boolean algebra by systems of maximal filters. We describe the order properties of the system of all such convergences. We introduce the category of 2-generated convergence Boolean algebras and generalize the construction of Novák sequential envelope to such algebras.
Sequential convergences on generalized Boolean algebras
In this paper we investigate convergence structures on a generalized Boolean algebra and their relations to convergence structures on abelian lattice ordered groups.
Sheaf Spaces and Sheaves of Universal Algebras.
Sheffer operation in ortholattices
We introduce the concept of Sheffer operation in ortholattices and, more generally, in lattices with antitone involution. By using this, all the fundamental operations of an ortholattice or a lattice with antitone involution are term functions built up from the Sheffer operation. We list axioms characterizing the Sheffer operation in these lattices.
Simultaneous strategies and Boolean games of uncountable length
Skula spaces
Sober spaces and continuations.
Sobre la geometría de la diferencia simétrica.
Some Classes of Projective Boolean Algebras.
Some distributivities in GBbi-QRs characterizing Boolean rings
This paper presents some manner of characterization of Boolean rings. These algebraic systems one can also characterize by means of some distributivities satisfied in GBbi-QRs.
Some Fixed Point Theorems in Boolean Algebra
Some properties of Eulerian lattices
In this paper, we prove that Eulerian lattices satisfying some weaker conditions for lattices or some weaker conditions for 0-distributive lattices become Boolean.
Some propositions equivalent to the Sikorski Extension Theorem for Boolean algebras
Some recent results on Cohen algebras