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» Some Properties and Some Problems on Set Functors
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COMBINATORICA
2006
137views more  COMBINATORICA 2006»
15 years 4 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 5 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»
15 years 1 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 9 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»
15 years 3 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