On the stability of the functional equation of the first order
Erwin Turdza (1970)
Annales Polonici Mathematici
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Erwin Turdza (1970)
Annales Polonici Mathematici
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Report of Meeting (2019)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
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Report from the conference.
Claudi Alsina (1991)
Annales Polonici Mathematici
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P. M. Peruničić (1989)
Matematički Vesnik
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Zenon Moszner (2013)
Banach Center Publications
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The inverse stability of functional equations is considered, i.e. when the function, approximating a solution of the equation, is an approximate solution of this equation.
Zenon Moszner (2016)
Annales Mathematicae Silesianae
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In the paper two types of stability and of b-stability of functional equations are distinguished.
Marek Czerni (1988)
Aequationes mathematicae
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Zenon Moszner (2015)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
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We consider the stability, the superstability and the inverse stability of the functional equations with squares of Cauchy’s, of Jensen’s and of isometry equations and the stability in Ulam-Hyers sense of the alternation of functional equations and of the equation of isometry.
Włodzimierz Fechner, Justyna Sikorska (2010)
Bulletin of the Polish Academy of Sciences. Mathematics
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We deal with the stability of the orthogonal additivity equation, presenting a new approach to the proof of a 1995 result of R, Ger and the second author. We sharpen the estimate obtained there. Moreover, we work in more general settings, providing an axiomatic framework which covers much more cases than considered before by other authors.
E.P. Akpan (1996)
Aequationes mathematicae
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J. Terjéki (1979)
Annales Polonici Mathematici
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M. Czerni (1995)
Aequationes mathematicae
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Brzdȩk, Janusz, Jung, Soon-Mo (2010)
Journal of Inequalities and Applications [electronic only]
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Sam B. Nadler, Jr. (1973)
Colloquium Mathematicae
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Stanisław Kasprzyk (1972)
Annales Polonici Mathematici
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Carlotta Maffei (1983)
Rendiconti del Seminario Matematico della Università di Padova
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