Caractérisations axiomatiques de la distance de la différence symétrique entre des relations binaires
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Displaying 1 – 10 of 10
Completeness and modular cross-symmetry in normed linear spaces
Jan Hamhalter (1992)
Czechoslovak Mathematical Journal
Concept lattices associated with L-fuzzy W-contexts.
Ana Burusco Juandeaburre, Ramón Fuentes-González (1996)
Mathware and Soft Computing
Concept lattices of quasiordered sets
Radomír Halaš (1993)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Congruence kernels of distributive PJP-semilattices
S. N. Begum, Abu Saleh Abdun Noor (2011)
Mathematica Bohemica
A meet semilattice with a partial join operation satisfying certain axioms is a JP-semilattice. A PJP-semilattice is a pseudocomplemented JP-semilattice. In this paper we describe the smallest PJP-congruence containing a kernel ideal as a class. Also we describe the largest PJP-congruence containing a filter as a class. Then we give several characterizations of congruence kernels and cokernels for distributive PJP-semilattices.
Contexts and sublattices of concept lattices
František Machala (1994)
Czechoslovak Mathematical Journal
Convex independence and the structure of clone-free multipartite tournaments
Darren B. Parker, Randy F. Westhoff, Marty J. Wolf (2009)
Discussiones Mathematicae Graph Theory
We investigate the convex invariants associated with two-path convexity in clone-free multipartite tournaments. Specifically, we explore the relationship between the Helly number, Radon number and rank of such digraphs. The main result is a structural theorem that describes the arc relationships among certain vertices associated with vertices of a given convexly independent set. We use this to prove that the Helly number, Radon number, and rank coincide in any clone-free bipartite tournament. We...
Convex isomorphisms of directed multilattices
Ján Jakubík, Mária Csontóová (1993)
Mathematica Bohemica
By applying the solution of the internal direct product decomposition we investigate the relations between convex isomorphisms and direct product decompositions of directed multilattices.
Convex subsets of partial monounary algebras
Danica Jakubíková-Studenovská (1988)
Czechoslovak Mathematical Journal
Covering energy of posets and its bounds
Vandana P. Bhamre, Madhukar M. Pawar (2023)
Mathematica Bohemica
The concept of covering energy of a poset is known and its McClelland type bounds are available in the literature. In this paper, we establish formulas for the covering energy of a crown with elements and a fence with elements. A lower bound for the largest eigenvalue of a poset is established. Using this lower bound, we improve the McClelland type bounds for the covering energy for some special classes of posets.
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