A sharp bound for the reconstruction of partitions.
A simple basis of ideal terms of Brouwerian semilattices
A simple proof of Suzumura's extension theorem for finite domains with applications.
A spectral construction of a treed domain that is not going-down
A ternary variety generated by lattices
A Theorem on Directed Quasi-Ordered Sets and Some Remarks
A weakly associative generalization of the variety of representable lattice ordered groups
Absolute flatness and amalgams in pomonoids.
Acyclic sets in -majority tournaments.
Adjoint Semilattice and Minimal Brouwerian Extensions of a Hilbert Algebra
Let be a Hilbert algebra. The monoid of all unary operations on generated by operations , which is actually an upper semilattice w.r.t. the pointwise ordering, is called the adjoint semilattice of . This semilattice is isomorphic to the semilattice of finitely generated filters of , it is subtractive (i.e., dually implicative), and its ideal lattice is isomorphic to the filter lattice of . Moreover, the order dual of the adjoint semilattice is a minimal Brouwerian extension of , and the...
Affine Complete Semilattices.
Affine permutations of type .
Algebraic and graph-theoretic properties of infinite -posets
A -labeled -poset is an (at most) countable set, labeled in the set , equipped with partial orders. The collection of all -labeled -posets is naturally equipped with binary product operations and -ary product operations. Moreover, the -ary product operations give rise to
Algebraic and graph-theoretic properties of infinite n-posets
A Σ-labeled n-poset is an (at most) countable set, labeled in the set Σ, equipped with n partial orders. The collection of all Σ-labeled n-posets is naturally equipped with n binary product operations and nω-ary product operations. Moreover, the ω-ary product operations give rise to nω-power operations. We show that those Σ-labeled n-posets that can be generated from the singletons by the binary and ω-ary product operations form the free algebra on Σ in a variety axiomatizable by an infinite collection...
Algebraic shifting and sequentially Cohen-Macaulay simplicial complexes.
Algebraische Hüllenoperatoren, bei denen jede endliche Menge durch die Menge ihrer isolierten Elemente erzeugt wird
All ordered sets having amenable lattice orders
Allgemeine Kardinaloperationen
Amoeba relation and Galois-Tukey connections
An analogue of covering space theory for ranked posets.