7 citations · 11 across the 36 of their papers we have counts for
4 papers · 2 filters
Residuation in twist products and pseudo-Kleene posets Abstract
Ivan Chajda, Helmut Länger
M. Busaniche, R. Cignoli, C. Tsinakis and A. M. Wille showed that every residuated lattice induces a residuation on its full twist product. For their construction they used also la…
Kleene posets and pseudo-Kleene posets
Ivan Chajda, Helmut Länger
The concept of a Kleene algebra (sometimes also called Kleene lattice) was already generalized by the first author for non-distributive lattices under the name pseudo-Kleene algebr…
Sublattices and -blocks of orthomodular posets
Ivan Chajda, Helmut Länger
For orthoposets we introduce a binary relation Delta and a binary operator d(x,y) which are generalizations of the binary relation C and the commutator c(x,y), respectively, known…
Orthogonality and complementation in the lattice of subspaces of a finite-dimensional vector space over a finite field
Ivan Chajda, Helmut Länger
We investigate the lattice L(V) of subspaces of an m-dimensional vector space V over a finite field GF(q) with q being the n-th power of a prime p. It is well-known that this latti…