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Journal of Convex Analysis 10 (2003), No. 1, 199--210 Copyright Heldermann Verlag 2003 Stability of Geometric and Harmonic Functional Means Aouatef El Biari École Mohammadia d'Ingénieurs, LERMA, Avenue Ibn Sinae, BP 765, Agdal-Rabat, Marocco Rachid Ellaia École Mohammadia d'Ingénieurs, LERMA, Avenue Ibn Sinae, BP 765, Agdal-Rabat, Marocco, ellaia@emi.ac.ma Mustapha Raïssouli Université Moulay Ismail, Faculté des Sciences, Dép. de Mathématiques et Informatiques, UFR AFACS -- Groupe AFA, BP 4010 Zitoune, 50000 Meknes, Marocco, raissoul@fsmek.ac.ma Geometric and harmonic means of two convex functionals have been recently constructed. The aim of this work is to study the stability of these operations. The development of this theory is very useful in many contexts. The obtained results generalize the case of symmetric positive operators which have been studied in the literature. Keywords: Convex functional, Fenchel duality, arithmetic, geometric and harmonic functional means, stability of operation means. MSC 2000: 52A51, 46A20. FullText-pdf (340 K) |