-Lattices of varieties of algebras of different types
Vague ideals of implication groupoids
We introduce the concept of vague ideals in a distributive implication groupoid and investigate their properties. The vague ideals of a distributive implication groupoid are also characterized.
Valuation et semi-modularité dans les demi-treillis
Valuations and distance functions on directed multilattices
Valuations and group algebras
Valuations and Möbius Function.
Valuations in groups and rings
Valuations on modular lattices
It is well-known that there exist infinite modular lattices possessing no non-trivial valuations. In this paper a class of modular lattices is defined and it is proved that each lattice belonging to has a nontrivial valuation. Next, a result of . Birkhoff concerning valuations on modular lattices of finite length is generalized.
Valued Groups.
Valued vector spaces and abelian -groups
Values and minimal spectrum of an algebraic lattice
Varieties of directed multilattices
Varieties of distributive lattices with unary operations. II.
Varieties of Distributive Rotational Lattices
A rotational lattice is a structure where is a lattice and is a lattice automorphism of finite order. We describe the subdirectly irreducible distributive rotational lattices. Using Jónsson’s lemma, this leads to a description of all varieties of distributive rotational lattices.
Varieties of half lattice-ordered groups of monotonic permutations of chains
Varieties of idempotent groupoids with small clones
We give an equational description of all idempotent groupoids with at most three essentially n-ary term operations.
Varieties of -groups are torsion classes
Varieties of modular p-algebras
Varieties of Ockham algebras satisfying
Varieties with modular and distributive lattices of symmetric or reflexive relations