A problem of A. Monteiro concerning relative complementation of lattices
A problem of Halmos on projective Boolean algebras
A proof and an extension of a theorem of G. Birkhoff.
A Proof And An Extension Of A Theorem Of G. Birkoff
A property of the lattice of subsemilattices
A propos des quasi-ordres - Note
A realization of -groups
A reduced free product of lattices
A reduction theorem for ring varieties whose subvariety lattice is distributive
We prove a theorem (for arbitrary ring varieties and, in a stronger form, for varieties of associative rings) which basically reduces the problem of a description of varieties with distributive subvariety lattice to the case of algebras over a finite prime field.
A regular a-semigroups inducing a certain lattice.
A relational semantics for the logic of bounded lattices
This paper aims to propose a complete relational semantics for the so-called logic of bounded lattices, and prove a completeness theorem with regard to a class of two-sorted frames that is dually equivalent (categorically) to the variety of bounded lattices.
A relative Laplacian spectral recursion.
A remark on a paper of H. Höft
A remark on growth relation.
A remark on lattice-ordered semigroups.
A remark on radical-semisimple classes of fully ordered groups
A remark on semigroups that are semilattices of right groups
A remark on signed posets and signed graphs
A Remark on Subsets of Free Boolean Algebras
A remark on the extension of the concept of incidence algebras to nonlocally finite partially ordered sets.