Transitivity in Fuzzy Hyperspaces
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Transitivity in Fuzzy HyperspacesData de publicació
2020Editor
MDPIISSN
2227-7390Cita bibliogràfica
Jardón, D.; Sánchez, I.; Sanchis, M. Transitivity in Fuzzy Hyperspaces. Mathematics 2020, 8, 1862.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://www.mdpi.com/2227-7390/8/11/1862Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Given a metric space (X, d), we deal with a classical problem in the theory of hyperspaces:
how some important dynamical properties (namely, weakly mixing, transitivity and point-transitivity)
between a discrete ... [+]
Given a metric space (X, d), we deal with a classical problem in the theory of hyperspaces:
how some important dynamical properties (namely, weakly mixing, transitivity and point-transitivity)
between a discrete dynamical system f : (X, d) → (X, d) and its natural extension to the hyperspace
are related. In this context, we consider the Zadeh’s extension fbof f to F(X), the family of all normal
fuzzy sets on X, i.e., the hyperspace F(X) of all upper semicontinuous fuzzy sets on X with compact
supports and non-empty levels and we endow F(X) with different metrics: the supremum metric
d∞, the Skorokhod metric d0, the sendograph metric dS and the endograph metric dE. Among other
things, the following results are presented: (1) If (X, d) is a metric space, then the following conditions
are equivalent: (a) (X, f) is weakly mixing, (b) ((F(X), d∞), fb) is transitive, (c) ((F(X), d0), fb) is
transitive and (d) ((F(X), dS)), fb) is transitive, (2) if f : (X, d) → (X, d) is a continuous function,
then the following hold: (a) if ((F(X), dS), fb) is transitive, then ((F(X), dE), fb) is transitive, (b) if
((F(X), dS), fb) is transitive, then (X, f) is transitive; and (3) if (X, d) be a complete metric space, then
the following conditions are equivalent: (a) (X × X, f × f) is point-transitive and (b) ((F(X), d0) is
point-transitive. [-]
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Mathematics, 2020, 8(11).Drets d'accés
info:eu-repo/semantics/openAccess
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