10.1186/2251-7456-6-50

HUR stability of a generalized Apollonius type quadratic functional equation in non-Archimedean Banach spaces

  1. Department of Mathematics, College of Sciences, Yasouj University, Yasouj, 75914-353, IR
  2. Department of Mathematics Education and RINS, Gyeongsang National University, Chinju, 660-701, KR

Published in Issue 2012-10-12

How to Cite

Kenary, H. A., & Cho, Y. J. (2012). HUR stability of a generalized Apollonius type quadratic functional equation in non-Archimedean Banach spaces. Mathematical Sciences, 6(1). https://doi.org/10.1186/2251-7456-6-50

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Abstract

Abstract Using the fixed point and direct methods, we prove the generalized Hyers-Ulam stability of the following generalized Apollonius type quadratic functional equation f∑i=1mzi−∑i=1mxi+f∑i=1mzi−∑i=1myi=12f∑i=1mxi−∑i=1myi+2f∑i=1mzi−∑i=1mxi+∑i=1myi2 in non-Archimedean Banach spaces.

References

  1. Ulam (1964) Wiley
  2. Hyers (1941) On the stability of the linear functional equation (pp. 222-224) https://doi.org/10.1073/pnas.27.4.222
  3. Aoki (1950) On the stability of the linear transformation in Banach spaces (pp. 64-66) https://doi.org/10.2969/jmsj/00210064
  4. Rassias (1978) On the stability of the linear mapping in Banach spaces (pp. 297-300) https://doi.org/10.1090/S0002-9939-1978-0507327-1
  5. Gǎvruta (1994) A generalization of the Hyers-Ulam-Rassias stability of approximately additive mappings (pp. 431-436) https://doi.org/10.1006/jmaa.1994.1211
  6. Skof (1983) Local properties and approximation of operators (pp. 113-129) https://doi.org/10.1007/BF02924890
  7. Cholewa (1984) Remarks on the stability of functional equations (pp. 76-86) https://doi.org/10.1007/BF02192660
  8. Czerwik (2002) World Scientific https://doi.org/10.1142/4875
  9. Eshaghi-Gordji et al. (2009) On the stability of a generalized quadratic and quartic type functional equation in quasi-Banach spaces 2009(153084)
  10. Eshaghi Gordji and Bavand Savadkouhi (2009) Stability of mixed type cubic and quartic functional equations in random normed spaces 2009(527462)
  11. Eshaghi Gordji et al. (2009) Quadratic-quartic functional equations in RN-spaces 2009(868423)
  12. Eshaghi Gordji (2010) Lap Lambert
  13. Eshaghi Gordji et al. (2009) Solution and stability of a mixed type cubic and quartic functional equation in quasi-Banach spaces 2009(417473)
  14. Fechner (2006) Stability of a functional inequality associated with the Jordan-von Neumann functional equation (pp. 149-161) https://doi.org/10.1007/s00010-005-2775-9
  15. Hensel (1897) Ubereine news Begrundung der Theorie der algebraischen Zahlen (pp. 83-88)
  16. Hyers et al. (1998) Basel https://doi.org/10.1007/978-1-4612-1790-9
  17. Katsaras and Beoyiannis (1999) Tensor products of non-Archimedean weighted spaces of continuous functions (pp. 33-44) https://doi.org/10.1023/A:1022926309318
  18. Khrennikov (1997) Kluwer https://doi.org/10.1007/978-94-009-1483-4_3
  19. Kominek (1989) On a local stability of the Jensen functional equation (pp. 499-507)
  20. Mihet and Radu (2008) On the stability of the additive Cauchy functional equation in random normed spaces (pp. 567-572) https://doi.org/10.1016/j.jmaa.2008.01.100
  21. Najati and Park (2008) The Pexiderized Apollonius-Jensen type additive mapping and isomorphisms between C∗-algebras (pp. 459-479) https://doi.org/10.1080/10236190701466546
  22. Nyikos (1999) On some non-Archimedean spaces of Alexandrof and Urysohn (pp. 1-23) https://doi.org/10.1016/S0166-8641(97)00239-3
  23. Park (2009) Fuzzy stability of a functional equation associated with inner product spaces (pp. 1632-1642) https://doi.org/10.1016/j.fss.2008.11.027
  24. Park (2005) Generalized Hyers-Ulam-Rassias stability of n-sesquilinear-quadratic mappings on Banach modules over C∗-algebras (pp. 279-291) https://doi.org/10.1016/j.cam.2004.11.001
  25. Park (2007) Fixed points and Hyers-Ulam-Rassias stability of Cauchy-Jensen functional equations in Banach algebras
  26. Park (2008) Generalized Hyers-Ulam-Rassias stability of quadratic functional equations: a fixed point approach
  27. Park (2008) Hyers-Ulam-Rassias stability of homomorphisms in quasi-Banach algebras 132(2) (pp. 87-96) https://doi.org/10.1016/j.bulsci.2006.07.004
  28. Radu (2003) The fixed point alternative and the stability of functional equations (pp. 91-96)
  29. Rassias (2003) Kluwer https://doi.org/10.1007/978-94-017-0225-6
  30. Rassias (1990) Problem 16;2, report of the 27th International Symposium on Functional Equations (pp. 292-293)
  31. Rassias (1998) On the stability of the quadratic functional equation and its applications (pp. 89-124)
  32. Rassias (2000) The problem of S.M. Ulam for approximately multiplicative mappings (pp. 352-378) https://doi.org/10.1006/jmaa.2000.6788
  33. Rassias (2000) On the stability of functional equations in Banach spaces (pp. 264-284) https://doi.org/10.1006/jmaa.2000.7046
  34. Rassias and Semrl (1992) On the behaviour of mappings which do not satisfy Hyers-Ulam stability (pp. 989-993) https://doi.org/10.1090/S0002-9939-1992-1059634-1
  35. Rassias and Semrl (1993) On the Hyers-Ulam stability of linear mappings (pp. 325-338) https://doi.org/10.1006/jmaa.1993.1070
  36. Rätz (2003) On inequalities associated with the Jordan-von Neumann functional equation (pp. 191-200) https://doi.org/10.1007/s00010-003-2684-8
  37. Saadati and Park (2010) Non-Archimedean L-fuzzy normed spaces and stability of functional equations 60(8) (pp. 2488-2496) https://doi.org/10.1016/j.camwa.2010.08.055
  38. Saadati R, Vaezpour M, Cho YJ: A note to paper “On the stability of cubic mappings and quartic mappings in random normed spaces”.
  39. J. Ineq. Appl
  40. , 2009(214530): 10.1155/2009/214530
  41. Saadati et al. (2011) Nonlinear L-random stability of an ACQ functional equation 2011(194394) https://doi.org/10.1155/2011/194394
  42. Azadi Kenary (2009) On the stability of a cubic functional equation in random normed spaces (pp. 1-11)
  43. Azadi Kenary (2011) Approximate additive functional equations in closed convex cone 5(2) (pp. 51-65)
  44. Azadi Kenary (2011) Stability of a Pexiderial functional equation in random normed spaces
  45. Azadi Kenary (2012) Random approximation of additive functional equation of m-Apollonus type 32B(5) (pp. 1813-1825) https://doi.org/10.1016/S0252-9602(12)60142-8
  46. Azadi Kenary and Cho (2011) Stability of mixed additive-quadratic Jensen type functional equation in various spaces 61(9) (pp. 2704-2724) https://doi.org/10.1016/j.camwa.2011.03.024
  47. Azadi Kenary H, Rezaei H, Talebzadeh S, Jin Lee S: Stabilities of cubic mappings in various normed spaces: direct and fixed point methods.
  48. J. Appli. Math
  49. , 28(546819): 10.1155/2012/546819
  50. Azadi Kenary et al. (2012) Hyers-Ulam-Rassias RNS approximation of Euler-Lagrange-type additive mappings 2012(672531) https://doi.org/10.1155/2012/672531
  51. Chung and Sahoo (2003) On the general solution of a quartic functional equation (pp. 565-576) https://doi.org/10.4134/BKMS.2003.40.4.565
  52. Deses (2005) On the representation of non-Archimedean objects (pp. 774-785) https://doi.org/10.1016/j.topol.2005.01.010
  53. Arriola and Beyer (2005) Stability of the Cauchy functional equation over p-adic fields (pp. 125-132)