On the superstability of the Pexider type trigonometric functional equation.
Kim, Gwang Hui (2010)
Journal of Inequalities and Applications [electronic only]
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Kim, Gwang Hui (2010)
Journal of Inequalities and Applications [electronic only]
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Kim, Gwang Hui, Dragomir, Sever S. (2006)
International Journal of Mathematics and Mathematical Sciences
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Report of Meeting (2019)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
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Report from the conference.
Kim, Gwang Hui (2007)
Advances in Difference Equations [electronic only]
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Gian Luigi Forti (1995)
Aequationes mathematicae
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Brzdȩk, Janusz, Jung, Soon-Mo (2010)
Journal of Inequalities and Applications [electronic only]
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Miura, Takeshi, Takagi, Hiroyuki, Tsukada, Makoto, Takahasi, Sin-Ei (2009)
Journal of Inequalities and Applications [electronic only]
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Kim, Gwang Hui (2006)
JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
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Popa, Dorian (2005)
Advances in Difference Equations [electronic only]
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Xu, Tian Zhou, Rassias, John Michael, Rassias, Matina John, Xu, Wan Xin (2010)
Journal of Inequalities and Applications [electronic only]
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Erwin Turdza (1970)
Annales Polonici Mathematici
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Gian Luigi Forti (1980)
Stochastica
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Consider the class of functional equations g[F(x,y)] = H[g(x),g(y)], where g: E --> X, f: E x E --> E, H: X x X --> X, E is a set and (X,d) is a complete metric space. In this paper we prove that, under suitable hypotheses on F, H and ∂(x,y), the existence of a solution of the functional inequality d(f[F(x,y)],H[f(x),f(y)]) ≤ ∂(x,y), implies the existence of a solution of the above equation.
Pourpasha, M.M., Rassias, J.M., Saadati, R., Vaezpour, S.M. (2010)
Journal of Inequalities and Applications [electronic only]
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