The stability of a quadratic functional equation with the fixed point alternative.
Park, Choonkil, Kim, Ji-Hye (2009)
Abstract and Applied Analysis
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Park, Choonkil, Kim, Ji-Hye (2009)
Abstract and Applied Analysis
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Park, Choonkil (2008)
Fixed Point Theory and Applications [electronic only]
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Moghimi, Mohammad B., Najati, Abbas, Park, Choonkil (2009)
Advances in Difference Equations [electronic only]
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Hark-Mahn Kim (2003)
Publications de l'Institut Mathématique
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Ravi, K., Murali, R., Arunkumar, M. (2008)
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Journal of Inequalities and Applications [electronic only]
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John Michael Rassias (2004)
Archivum Mathematicum
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In 1940 S. M. Ulam (Intersci. Publ., Inc., New York 1960) imposed at the University of Wisconsin the problem: “Give conditions in order for a linear mapping near an approximately linear mapping to exist”. According to P. M. Gruber (Trans. Amer. Math. Soc. 245 (1978), 263–277) the afore-mentioned problem of S. M. Ulam belongs to the following general problem or Ulam type problem: “Suppose a mathematical object satisfies a certain property approximately. Is it then possible to approximate...
Lee, Jung Rye, An, Jong Su, Park, Choonkil (2008)
Abstract and Applied Analysis
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