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Listar por autor "Alegre Gil, Maria Carmen"

Mostrando ítems 1-16 de 16

A Caristi fixed point theorem for complete quasi-metric spaces by using mw-distances

Alegre Gil, Maria Carmen; Marín Molina, Josefa (Babes-Bolyai University, 2018-02-01)

[EN] In this paper we give a quasi-metric version of Caristi's fixed point theorem by using mw-distances. Our theorem generalizes a recent result obtained by Karapinar and Romaguera in [7]
A Discussion on p-Geraghty Contraction on mw-Quasi-Metric Spaces

Alegre Gil, Maria Carmen; Fulga, Andreea; Karapinar, Erdal; Tirado Peláez, Pedro (MDPI AG, 2020-09)

[EN] In this paper we consider a kind of Geraghty contractions by using mw-distances in the setting of complete quasi-metric spaces. We provide fixed point theorems for this type of mappings and illustrate with some examples ...
A fixed point theorem for generalized contractions involving w-distances on complete quasi-metric spaces

Alegre Gil, Maria Carmen; Marín Molina, Josefa; Romaguera Bonilla, Salvador (SpringerOpen, 2014-02)

We obtain a fixed point theorem for generalized contractions on complete quasi-metric spaces, which involves w-distances and functions of Meir-Keeler and Jachymski type. Our result generalizes in various directions the ...
A note on phi-contractions in probabilistic and fuzzy metric spaces

Alegre Gil, Maria Carmen; Romaguera Bonilla, Salvador (Elsevier, 2017)

[EN] In a recent paper Fang (2015) [1], J.X. Fang generalized a crucial fixed point theorem for probabilistic phi-contractions on complete Menger spaces due to Jachymski (2010) [3]. In this note we show that actually Fang ...
Adaptación de álgebra al EEES

Sanabria-Codesal, Esther; Alegre Gil, Maria Carmen; Bravo Villar, María Pilar; Esteban Romero, Ramón; Fuster Capilla, R.; Gasso Matoses, María Teresa; Martínez-Pastor, Ana; Monserrat Delpalillo, Francisco José; Pedraza Aguilera, María Carmen (Instituto de Ciencias de la Educación de la Universidad de Alicante, 2011-11-08)

[ES] Durante el curso 2010-11 se ha implantado la titulación de Grado en Ingeniería Informática en la Escuela Técnica Superior de Ingeniería Informática (ETSINF) de la Universidad Politécnica de Valencia (UPV). Álgebra es ...
Characterizations of quasi-metric completeness in terms of Kannan-type fixed point theorems

Alegre Gil, Maria Carmen; Dag, Hacer; Romaguera Bonilla, Salvador; Tirado Peláez, Pedro (Hacettepe Journal of Mathematics and Statistics, 2017)

[EN] We obtain quasi-metric versions of Kannan's fixed point theorem for self-mappings and multivalued mappings, respectively, which are used to deduce characterizations of d-sequentially complete and of left K sequentially ...
Modified w-distances on quasi-metric spaces and a fixed point theorem on complete quasi-metric spaces

Alegre Gil, Maria Carmen; Marín Molina, Josefa (Elsevier, 2016-04-15)

[EN] In this paper we introduce the notion of modified w-distance (mw-distance) on a quasi-metric space which generalizes the concept of quasi-metric. We obtain a fixed point theorem for generalized contractions with respect ...
On the fixed point theory in bicomplete quasi-metric spaces

Alegre Gil, Maria Carmen; Dag, Hacer; Romaguera Bonilla, Salvador; Tirado Peláez, Pedro (Shomal University, 2016)

[EN] We show that some important fixed point theorems on complete metric spaces as Browder’s fixed point theorem and Matkowski’s fixed point theorem can be easily generalized to the framework of bicomplete quasi-metric ...
On the uniform boundedness theorem in fuzzy quasi-normed spaces

Alegre Gil, Maria Carmen; Romaguera Bonilla, Salvador (Elsevier, 2016-01-01)

[EN] We prove that a family of continuous linear operators from a fuzzy quasi-normed space of the half second category to a fuzzy quasi-normed space is uniformly fuzzy bounded if and only if it is pointwise fuzzy bounded. ...
PROBLEMAS DE MATEMÁTICA DISCRETA

Alegre Gil, Maria Carmen; Martínez Pastor, Ana; Pedraza Aguilera, María Carmen (Editorial Universitat Politècnica de València, 1997-07-23)

Se trata de un texto de problemas resueltos en el ámbito de la Matemática Discreta, destinado principalmente a estudiantes de Informática, aunque muchos de los tópicos incluidos pueden ser útiles a estudiantes de otras ...
Quasi-Metric Properties of the Dual Cone of an Asymmetric Normed Space

Alegre Gil, Maria Carmen (Springer-Verlag, 2022-08)

[EN] We obtain some quasi-metric properties of the dual cone of an asymmetric normed space. Thus, we prove that it is balanced, and hence its topology is completely regular. We also prove that it is complete in the sense ...
Revisiting Bianchini and Grandolfi Theorem in the Context of Modified omega-Distances

Alegre Gil, Maria Carmen; Karapinar, Erdal; Marín Molina, Josefa; Tirado Peláez, Pedro (Springer-Verlag, 2019-12)

[EN] In this paper, we establish a proof for Bianchini and Grandolfi Theorem in the context of quasi-metric spaces via modified omega-distances. As consequences of our main results, we derive several existing fixed point ...
The Hahn-Banach Extension Theorem for Fuzzy Normed Spaces Revisited

Alegre Gil, Maria Carmen; Romaguera Bonilla, Salvador (Hindawi Publishing Corporation, 2014-05-28)

This paper deals with fuzzy normed spaces in the sense of Cheng and Mordeson. We characterize fuzzy norms in terms of ascending and separating families of seminorms and prove an extension theorem for continuous linear ...
The uniform boundedness theorem in asymmetric normed spaces

Alegre Gil, Maria Carmen; Romaguera Bonilla, Salvador; Veeramani, P. (Hindawi Publishing Corporation, 2012)

We obtain a uniform boundedness type theorem in the frame of asymmetric normed spaces. The classical result for normed spaces follows as a particular case.
The weak topology in finite dimensional asymmetric normed spaces

Alegre Gil, Maria Carmen (Elsevier, 2019-09-01)

[EN] In this paper we show that, in contrast to what happens in a normed space, the weak topology of a finite dimensional asymmetric normed space is not necessarily the same as the topology of the asymmetric norm. We provide ...
Two fixed point theorems on quasi-metric spaces via mw- distances

Alegre Gil, Maria Carmen (Editorial Universitat Politècnica de València, 2017-10-23)

[EN] In this paper we prove a Banach-type fixed point theorem and a Kannan-type theorem in the setting of quasi-metric spaces using the notion of mw-distance. These theorems generalize some results that have recently ...