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AN AGING CONCEPT BASED ON MAJORIZATION

Published online by Cambridge University Press:  07 January 2003

J.M. Fernández-Ponce
Affiliation:
Department of Statistics, University of Sevilla, Sevilla, Spain, E-mail: ferpon@us.es
A. Suárez-Llorens
Affiliation:
Department of Statistics, University of Cádiz, Cádiz, Spain, E-mail: alfonso.suarez@uca.es

Abstract

In this article, we introduce a new dispersion order weaker than the classic dispersion order discussed by Lewis and Thompson (1981). We study the equivalence of this order with the majorization order under the assumption of unimodality. Finally, we use this equivalence to characterize the IFR aging notion for unimodal distributions by means of the notion of decreasing in randomness.

Type
Research Article
Copyright
© 2003 Cambridge University Press

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