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» Some Properties and Some Problems on Set Functors
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COMBINATORICA
2006
137views more  COMBINATORICA 2006»
14 years 11 months ago
Extremal Problems For Transversals In Graphs With Bounded Degree
We introduce and discuss generalizations of the problem of independent transversals. Given a graph property R, we investigate whether any graph of maximum degree at most d with a ...
Tibor Szabó, Gábor Tardos
EUSFLAT
2007
125views Fuzzy Logic» more  EUSFLAT 2007»
15 years 1 months ago
Representations of Archimedean t-norms in Interval-valued Fuzzy Set Theory
In this paper the Archimedean property and the nilpotency of t-norms on the lattice LI is investigated, where LI is the underlying lattice of interval-valued fuzzy set theory (Sam...
Glad Deschrijver
EUSFLAT
2009
131views Fuzzy Logic» more  EUSFLAT 2009»
14 years 9 months ago
Preservation of Properties of Interval-Valued Fuzzy Relations
The goal of this paper is to consider properties of the composition of interval-valued fuzzy relations which were introduced by L.A. Zadeh in 1975. Fuzzy set theory turned out to b...
Barbara Pekala
GECCO
2004
Springer
107views Optimization» more  GECCO 2004»
15 years 5 months ago
An Evolution Strategy Using a Continuous Version of the Gray-Code Neighbourhood Distribution
Abstract. We derive a continuous probability distribution which generates neighbours of a point in an interval in a similar way to the bitwise mutation of a Gray code binary string...
Jonathan E. Rowe, Dzena Hidovic
DM
2002
92views more  DM 2002»
14 years 11 months ago
A local-global principle for vertex-isoperimetric problems
We consider the vertex-isoperimetric problem for cartesian powers of a graph G. A total order on the vertex set of G is called isoperimetric if the boundary of sets of a given siz...
Sergei L. Bezrukov, Oriol Serra