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Approximate (m,n)-Cauchy-Jensen additive mappings in C*-algebras

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Abstract

Concerning the stability problem of functional equations, we introduce a general (m, n)-Cauchy-Jensen functional equation and establish new theorems about the Hyers-Ulam stability of general (m, n)-Cauchy-Jensen additive mappings in C*-algebras, which generalize the results obtained for Cauchy-Jensen type additive mappings.

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References

  1. Ulam, S. M.: A Collection of Mathematical Problems, Interscience Publ., New York, 1960; Problems in Modern Mathematics, Wiley-Interscience, New York, 1964, Chap. VI

    MATH  Google Scholar 

  2. Hyers, D. H.: On the stability of the linear functional equation. Proc. Natl. Acad. Sci., 27, 222–224 (1941)

    Article  MathSciNet  Google Scholar 

  3. Aoki, T.: On the stability of the linear transformation in Banach spaces. J. Math. Soc. Japan, 2, 64–66 (1950)

    Article  MathSciNet  MATH  Google Scholar 

  4. Bourgin, D. G.: Classes of transformations and bordering transformations. Bull. Amer. Math. Soc., 57, 223–237 (1951)

    Article  MathSciNet  MATH  Google Scholar 

  5. Rassias, Th. M.: On the stability of the linear mapping in Banach spaces. Proc. Amer. Math. Soc., 72, 297–300 (1978)

    Article  MathSciNet  MATH  Google Scholar 

  6. Gajda, Z.: On stability of additive mappings. Internat. J. Math. Math. Sci., 14, 431–434 (1991)

    Article  MathSciNet  MATH  Google Scholar 

  7. Rassias, Th. M., Šemrl, P.: On the behaviour of mappings which do not satisfy Hyers-Ulam stability. Proc. Amer. Math. Soc., 114, 989–993 (1992)

    Article  MathSciNet  MATH  Google Scholar 

  8. Gǎvruta, P.: A generalization of the Hyers-Ulam-Rassias stability of approximately additive mappings. J. Math. Anal. Appl., 184, 431–436 (1994)

    Article  MathSciNet  Google Scholar 

  9. Rassias, J. M.: On approximation of approximately linear mappings by linear mappings. J. Funct. Anal., 46, 126–130 (1982)

    Article  MathSciNet  MATH  Google Scholar 

  10. Rassias, J. M.: On approximation of approximately linear mappings by linear mappings. Bull. Sci. Math., 108, 445–446 (1984)

    MathSciNet  MATH  Google Scholar 

  11. Rassias, J. M.: Complete solution of the multi-dimensional problem of Ulam. Discuss. Math., 14, 101–107 (1994)

    MathSciNet  MATH  Google Scholar 

  12. Rassias, J. M., Rassias, M. J.: On the Ulam stability of Jensen and Jensen type mappings on restricted domains. J. Math. Anal. Appl., 281, 516–524 (2003)

    Article  MathSciNet  MATH  Google Scholar 

  13. Rassias, J. M., Rassias, M. J.: Asymptotic behavior of alternative Jensen and Jensen type functional equations. Bull. Sci. Math., 129, 545–558 (2005)

    Article  MathSciNet  MATH  Google Scholar 

  14. Rassias, J. M.: Refined Hyers-Ulam approximation of approximately Jensen type mappings. Bull. Sci. Math., 131, 89–98 (2007)

    Article  MathSciNet  MATH  Google Scholar 

  15. Jun, K., Kim, H., Rassias, J. M.: Extended Hyers-Ulam stability for Cauchy-Jensen mappings. J. Diff. Equ. Appl., 13(12), 1139-1153 (2007)

    Google Scholar 

  16. Gǎvruta, P.: An answer to a question of John M. Rassias concerning the stability of Cauchy equation. Advances in Equations and Inequalities, Hadronic Math. Series, USA, 1999, 67–71

  17. Rassias, J. M.: Solution of a problem of Ulam. J. Approx. Theory, 57, 268–273 (1989)

    Article  MathSciNet  MATH  Google Scholar 

  18. Fenyö, I.: On an inequality of P.W. Cholewa. In: General inequalities, Vol. 5, Internat. Schriftenreiche Numer. Math. Vol. 80, Birkhäuser, Basel-Boston, MA, 1987, 277–280

    Google Scholar 

  19. Forti, G. L.: Hyers-Ulam stability of functional equations in several variables. Aequationes Math., 50, 143–190 (1995)

    Article  MathSciNet  MATH  Google Scholar 

  20. Hyers, D. H., Isac, G., Rassias, Th. M.: Stability of Functional Equations in Several Variables, Birkhäuser, Basel, 1998

    Book  MATH  Google Scholar 

  21. Hyers, D. H., Rassias, Th. M.: Approximate homomorphisms. Aequationes Math., 44, 125–153 (1992)

    Article  MathSciNet  MATH  Google Scholar 

  22. Johnson, B. E.: Approximately multiplicative maps between Banach algebras. J. London Math. Soc., 37, 294–316 (1988)

    Article  MathSciNet  MATH  Google Scholar 

  23. Rassias, Th. M.: On the stability of functional equations in Banach spaces. J. Math. Anal. Appl., 251, 264–284 (2000)

    Article  MathSciNet  MATH  Google Scholar 

  24. Park, C., An, J.: Isometric isomorphisms in proper CQ*-algebras. Acta Mathematica Sinica, English Series, 25(7), 1131–1138 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  25. Chung, J.: Stability of a generalized quadratic functional equation in Schwartz distributions. Acta Mathematica Sinica, English Series, 25(9), 1459–1468 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  26. Jung, S.: Implicit function theorem and its application to a Ulam’s problem for exact differential equations. Acta Mathematica Sinica, English Series, 26(11), 2085–2092 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  27. Wang, L., Liu, B.: The Hyers-Ulam stability of a functional equation deriving from quadratic and cubic functions in quasi-β-normed spaces. Acta Mathematica Sinica, English Series, 26(12), 2335–2348 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  28. Zhou, D.-X.: On a conjecture of Z. Ditzian. J. Approx. Theory, 69, 167–172 (1992)

    Article  MathSciNet  MATH  Google Scholar 

  29. Malliavin, P.: Stochastic Analysis, Springer, Berlin, 1997

    MATH  Google Scholar 

  30. Ramachandran, B., Lau, K.-S.: Functional Equations in Probability Theory, Academic Press, Inc. 1991

  31. Eichhorn, W.: Functional Equations in Economic, Addison-Wesley Publ. Co. 1978

  32. Aczél, J.: A Short Course on Functional Equations Based Upon Recent Applications to the Social and Behavioral Sciences, D. Reidel Publishing Company, Dordrecht, 1987

    MATH  Google Scholar 

  33. Rassias, J. M., Kim, H.: Generalized Hyers-Ulam stability for general additive functional equations in quasi-β-normed spaces. J. Math. Anal. Appl., 356, 302–309 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  34. Lee, Y., Jun, K.: A generalization of the Hyers-Ulam-Rassias stability of Jensen’s equation. J. Math. Anal. Appl., 238, 305–315 (1999)

    Article  MathSciNet  MATH  Google Scholar 

  35. Chang, I., Son, E., Kim, H.: Refined functional equations stemming from cubic, quadratic and additive mappings. Acta Mathematica Sinica, English Series, 25(10), 1595–1608 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  36. Najati, A.: Homomorphisms in quasi-Banach algebras associated with a Pexiderized Cauchy-Jensen functional equation. Acta Mathematica Sinica, English Series, 25(9), 1529–1542 (2009)

    Article  MathSciNet  MATH  Google Scholar 

  37. Murphy, G. J.: C*-algebras and Operator Theory, Academic Press, New York, 1990

    Google Scholar 

  38. Kadison, R. V., Ringrose, J. R.: Fundamentals of the Theory of Operator Algebras, Academic Press, New York, 1983

    MATH  Google Scholar 

  39. Bonsall, F., Duncan, J.: Complete Normed Algebras, Springer-Verlag, New York, Heidelberg and Berlin, 1973

    MATH  Google Scholar 

  40. Brown, L., Pedersen, G.: C*-algebras of real rank zero. J. Funct. Anal., 39, 131–149 (1991)

    Article  MathSciNet  Google Scholar 

  41. Park, C.: Universal Jensen’s equations in Banach modules over a C*-algebra and its unitary group. Acta Mathematica Sinica, English Series, 20, 1047–1056 (2004)

    Article  MathSciNet  MATH  Google Scholar 

  42. Thomas, M. D.: The image of a derivation is contained in the radical. Ann. of Math., 128, 435–460 (1988)

    Article  MathSciNet  MATH  Google Scholar 

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Correspondence to Hark-Mahn Kim.

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This work was supported by Basic Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (Grant No. 2010-0015749)

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Rassias, J.M., Jun, K.W. & Kim, HM. Approximate (m,n)-Cauchy-Jensen additive mappings in C*-algebras. Acta. Math. Sin.-English Ser. 27, 1907–1922 (2011). https://doi.org/10.1007/s10114-011-0179-4

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