J. M. Calabuig
Polytechnic University of Valencia
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Featured researches published by J. M. Calabuig.
Indagationes Mathematicae | 2008
J. M. Calabuig; O. Delgado; E. A. Sánchez Pérez
Abstract Given two Banach function spaces X and Y related to a measure μ, the Y-dual space XY of X is defined as the space of the multipliers from X to Y. The space XY is a generalization of the classical Kothe dual space of X, which is obtained by taking Y = Lt(μ). Under minimal conditions, we can consider the Y-bidual space XYY of X (i.e. the Y-dual of XY). As in the classical case, the containment X ⊂ XYY always holds. We give conditions guaranteeing that X coincides with XYY, in which case X is said to be Y-perfect. We also study when X is isometrically embedded in XYY. Properties involving p-convexity, p-concavity and the order of X and Y, will have a special relevance.
Scientometrics | 2016
J. M. Calabuig; Antonia Ferrer-Sapena; Enrique A. Sánchez-Pérez
A mathematical structure for defining multi-valued bibliometric indices is provided with the aim of measuring the impact of general sources of information others than articles and journals—for example, repositories of datasets. The aim of the model is to use several scalar indices at the same time for giving a measure of the impact of a given source of information, that is, we construct vector valued indices. We use the properties of these vector valued indices in order to give a global answer to the problem of finding the optimal scalar index for measuring a particular aspect of the impact of an information source, depending on the criterion we want to fix for the evaluation of this impact. The main restrictions of our model are (1) it uses finite sets of scalar impact indices (altmetrics), and (2) these indices are assumed to be additive. The optimization procedure for finding the best tool for a fixed criterion is also presented. In particular, we show how to create an impact measure completely adapted to the policy of a specific research institution.
Bulletin of The Australian Mathematical Society | 2008
Oscar Blasco; J. M. Calabuig
We introduce the spaces V p (X) (resp. V p (X)) of the vector measures F : ! X of bounded (p,B)variation (resp. of bounded (p,B)-semivariation) with respect to a bounded bilinear map B : X◊Y ! Z and show that the spaces L p (X) consisting in functions which are p-integrable with respect to B, defined in [4], are isometrically embedded into V p (X). We characterize V p (X) in terms of bilinear maps from L p 0 ◊ Y into Z and V p B(X) as a subspace of operators from L p 0
Annals of Functional Analysis | 2017
Ezgi Erdoğan; J. M. Calabuig; Enrique A. Sánchez Pérez
Erdogans work was supported by TUBITAK, the Scientific and Technological Research Council of Turkey. Calabuigs work was supported by Ministerio de Economia, Industria y Competitividad (MINECO) grant MTM2014-53009-P. Sanchez Perezs work was supported by MINECO grant MTM2016-77054-C2-1-P.
Journal of Mathematical Analysis and Applications | 2010
J. M. Calabuig; O. Delgado; E. A. Sánchez Pérez
Collectanea Mathematica | 2014
J. M. Calabuig; O. Delgado; M.A. Juan; E. A. Sánchez Pérez
Archive | 2012
Oscar Blasco; José Bonet; J. M. Calabuig; David Jornet
Integral Equations and Operator Theory | 2009
J. M. Calabuig; José Olivares Rodríguez; Enrique A. Sánchez-Pérez
Taiwanese Journal of Mathematics | 2008
Oscar Blasco; J. M. Calabuig
Journal of Mathematical Analysis and Applications | 2008
Oscar Blasco; J. M. Calabuig; Teresa Signes