Tatiana Pedraza
Polytechnic University of Valencia
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Publication
Featured researches published by Tatiana Pedraza.
Revista Matematica Iberoamericana | 2008
A. Ballester-Bolinches; Leonid A. Kurdachenko; Javier Otal; Tatiana Pedraza
A subgroup H of a group G is said to be permutable in G, if HK = KH for every subgroup K of G. By a result due to Stonehewer, every permutable subgroup is ascendant although the converse is false. On the other hand, permutability is not a transitive relation. In this paper we study some inflnite groups whose ascendant subgroups are permutable. These groups are very close to the groups in which the relation to be a permutable subgroup is transitive. 2001 MSC: Primary: 20F99.
Fuzzy Sets and Systems | 2014
Tatiana Pedraza; Jesús Rodríguez-López; Salvador Romaguera
Abstract We characterize the convergence of fuzzy sets in the supremum metric given by the supremum of the Hausdorff distances of the α-cuts of the fuzzy sets. We do it by dividing this metric into its lower and upper quasi-pseudometric parts. This characterization is given in the more general context with no assumption on the fuzzy sets. Furthermore, motivated from the theory of Convex Analysis, we also provide some results about the behavior of the convergence in the supremum metric with respect to maximizers.
Communications in Algebra | 2003
A. Ballester-Bolinches; Tatiana Pedraza
Abstract This work was intended as an attempt to continue the study of the class ℬ of generalised nilpotent groups started in a previous paper. We present some results concerning the Fitting subgroup and the ℬ-injectors of a radical locally finite group satisfying min-p for all p.
Forum Mathematicum | 2007
A. Ballester-Bolinches; Hermann Heineken; Tatiana Pedraza
Abstract Radical locally finite groups with min-p for all primes p in which every descendant subgroup is normal are studied in the paper. It turns out that these groups are precisely T-groups, that is, groups whose subnormal subgroups are normal.
Publicacions Matematiques | 2005
A. Ballester-Bolinches; Tatiana Pedraza
This paper is devoted to the study of groups
Forum Mathematicum | 2010
A. Ballester-Bolinches; Leonid A. Kurdachenko; Javier Otal; Tatiana Pedraza
G
Bulletin of The Australian Mathematical Society | 2003
A. Ballester-Bolinches; Tatiana Pedraza
in the universe
Journal of Algebra | 2002
A. Ballester-Bolinches; Tatiana Pedraza
c\bar{\mathfrak L}
Annali di Matematica Pura ed Applicata | 2010
A. Ballester-Bolinches; Leonid A. Kurdachenko; Javier Otal; Tatiana Pedraza
of all radical locally finite groups with min-
Journal of Pure and Applied Algebra | 2007
A. Ballester-Bolinches; Leonid A. Kurdachenko; Tatiana Pedraza
p