منابع مشابه
On Lexicographic Products of Two Fuzzy Graphs
Abstract. In this paper, lexicographic products of two fuzzy graphs namely, lexicographic min-product and lexicographic max-product which are analogous to the concept lexicographic product in crisp graph theory are defined. It is illustrated that the operations lexicographic products are not commutative. The connected, effective and complete properties of the operations lexicographic products a...
متن کاملRepresentable Lexicographic Products
A linear ordering is said to be representable if it can be order-embedded into the reals. Representable linear orderings have been characterized as those which are separable in the order topology and have at most countably many jumps. We use this characterization to study the representability of a lexicographic product of linear orderings. First we count the jumps in a lexicographic product in ...
متن کاملAbsorbing Lexicographic Products in Metarouting
Modern treatments of routing protocols use algebraic techniques to derive the protocol’s properties, permitting a semantic richness more flexible than simple numerical “shortest paths”. Many such routing protocols make preference decisions based on multiple criteria. This fits well with an algebraic formulation with each strata in the decision process modeled as an algebraic structure, that are...
متن کاملFunctional Equations for Lexicographic Products *
We generalize the main result of [K–K–S] concerning the convex embeddings of a chain Γ in a lexicographic power ∆Γ. For a fixed non-empty chain ∆, we derive necessary and sufficient conditions for the existence of non-empty solutions Γ to each of the lexicographic functional equations (∆) ≃ Γ , (∆) ≃ Γ and (∆) ≃ Γ .
متن کاملRees products and lexicographic shellability
We use the theory of lexicographic shellability to provide various examples in which the rank of the homology of a Rees product of two partially ordered sets enumerates some set of combinatorial objects, perhaps according to some natural statistic on the set. Many of these examples generalize a result of J. Jonsson, which says that the rank of the unique nontrivial homology group of the Rees pr...
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ژورنال
عنوان ژورنال: Colloquium Mathematicum
سال: 1974
ISSN: 0010-1354,1730-6302
DOI: 10.4064/cm-30-1-121-125