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Displaying 1 – 20 of 319
Calcul des idéaux d'un ordonné fini
J.-P. Bordat (1991)
RAIRO - Operations Research - Recherche Opérationnelle
Calcul des relations inverses
René Guitart (1977)
Cahiers de Topologie et Géométrie Différentielle Catégoriques
Calcul pratique du treillis de Galois d'une correspondance
J. P. Bordat (1986)
Mathématiques et Sciences Humaines
Cambrian fans
Nathan Reading, David E. Speyer (2009)
Journal of the European Mathematical Society
For a finite Coxeter group and a Coxeter element of ; the -Cambrian fan is a coarsening of the fan defined by the reflecting hyperplanes of . Its maximal cones are naturally indexed by the -sortable elements of . The main result of this paper is that the known bijection cl between -sortable elements and -clusters induces a combinatorial isomorphism of fans. In particular, the -Cambrian fan is combinatorially isomorphic to the normal fan of the generalized associahedron for . The rays...
Cancellation rule for internal direct product decompositions of a connected partially ordered set
Ján Jakubík, Mária Csontóová (2000)
Mathematica Bohemica
In this note we deal with two-factor internal direct product decompositions of a connected partially ordered set.
Canonical extensions of Stone and double Stone algebras: the natural way
Miroslav Haviar, Hilary A. Priestley (2006)
Mathematica Slovaca
Canonical ordering theorems, a first attempt
Nešetřil, J., Prömel, H. J., Rödl, V., Voigt, B. (1982)
Proceedings of the 10th Winter School on Abstract Analysis
Canonical partition theorems for finite distributive lattices
Prömel, H. J., Voigt, B. (1982)
Proceedings of the 10th Winter School on Abstract Analysis
Cantor extension of a half lattice ordered group
Štefan Černák (1998)
Mathematica Slovaca
Cantor extension of a half lineary cyclically ordered group
Štefan Černák (2001)
Discussiones Mathematicae - General Algebra and Applications
Convergent and fundamental sequences are studied in a half linearly cyclically ordered group G with the abelian increasing part. The main result is the construction of the Cantor extension of G.
Cantor extension of a mixed product of directed groups
Štefan Černák (1976)
Mathematica Slovaca
Cantor extension of an Abelian cyclically ordered group
Štefan Černák (1989)
Mathematica Slovaca
Cantor-Bernstein theorem for lattice ordered groups
Ján Jakubík (1972)
Czechoslovak Mathematical Journal
Cantor-Bernstein theorem for lattices
Ján Jakubík (2002)
Mathematica Bohemica
This paper is a continuation of a previous author’s article; the result is now extended to the case when the lattice under consideration need not have the least element.
Cantor-Bernstein theorem for -algebras
Ján Jakubík (1999)
Czechoslovak Mathematical Journal
Caractérisation du type d'ordre des barrières de Nash-Williams
Marc Assous (1974)
Publications du Département de mathématiques (Lyon)
Caractérisations axiomatiques de la distance de la différence symétrique entre des relations binaires
Jean-Pierre Barthelemy (1979)
Mathématiques et Sciences Humaines
Caractérisations métriques des ensembles ordonnés semi-modulaires
B. Monjardet (1977)
Mathématiques et Sciences Humaines
Cardinal and ordinal arithmetics of -ary relational systems and -ary ordered sets
Jiří Karásek (1998)
Mathematica Bohemica
The aim of this paper is to define and study cardinal (direct) and ordinal operations of addition, multiplication, and exponentiation for -ary relational systems. -ary ordered sets are defined as special -ary relational systems by means of properties that seem to suitably generalize reflexivity, antisymmetry, and transitivity from the case of or 3. The class of -ary ordered sets is then closed under the cardinal and ordinal operations.
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