Additive functional equation and inequality are stable in Banach space and its applications
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DOI:
https://doi.org/10.26637/mjm101/002Abstract
In this paper, the authors established the solution of the additive functional equation and inequality
$$
f(x)+f(y+z)-f(x+y)=f(z)
$$
and
$$
\|f(x)+f(y+z)-f(x+y)\| \leq\|f(z)\| .
$$
We also prove that the above functional equation and inequality are stable in Banach space in the sense of Ulam, Hyers, Rassias. An application of this functional equation is also studied.
Keywords:
Additive functional equations, generalized Hyers - Ulam - Rassias stabilityMathematics Subject Classification:
39B52, 32B72, 32B82- Pages: 10-17
- Date Published: 01-01-2013
- Vol. 1 No. 01 (2013): Malaya Journal of Matematik (MJM)
J. Aczel and J. Dhombres, Functional Equations in Several Variables, Cambridge University Press, 1989. DOI: https://doi.org/10.1017/CBO9781139086578
T. Aoki, On the stability of the linear transformation in Banach spaces, J. Math. Soc. Japan, 2(1950), 64-66. DOI: https://doi.org/10.2969/jmsj/00210064
M. Arunkumar, Solution and stability of Arun-Additive functional equations, International Journal Mathematical Sciences and Engineering Applications, 4(3)(2010), 33-46.
S. Czerwik, Functional Equations and Inequalities in Several Variables, World Scientific, River Edge, NJ, 2002. DOI: https://doi.org/10.1142/4875
G.Z. Eskandani, P. Gˇ avrutˇ a, J.M. Rassias and R. Zarghami, Generalized Hyers-Ulam stability for a general mixed functional equation in quasi-β-normed Spaces, Mediterr. J. Math., 8(2011), 331-348. DOI: https://doi.org/10.1007/s00009-010-0082-8
G.Z. Eskandani, P. Gˇ avrutˇ a, On the stability problem in quasi-Banach spaces, Nonlinear Funct. Anal. Appl., (to appear).
P. Gˇ avrutˇ a, A generalization of the Hyers-Ulam-Rassias stability of approximately additive mappings, J. Math. Anal. Appl., 184(1994), 431-436. DOI: https://doi.org/10.1006/jmaa.1994.1211
P. Gˇ avrutˇ a, An answer to a question of J.M. Rassias concerning the stability of Cauchy functional equation, Advances in Equations and Inequalities, Hadronic Math. Ser., (1999), 67-71.
P. Gˇ avrutˇ a, On a problem of G. Isac and Th. M. Rassias concerning the stability of mappings, J. Math. Anal. Appl., 261(2001), 543-553. DOI: https://doi.org/10.1006/jmaa.2001.7539
D.H. Hyers, On the stability of the linear functional equation, Proc.Nat. Acad.Sci., 27(1941), 222-224. DOI: https://doi.org/10.1073/pnas.27.4.222
D.H. Hyers, G. Isac and Th.M. Rassias, Stability of Functional Equations in Several Variables, Birkhauser, Basel, 1998. DOI: https://doi.org/10.1007/978-1-4612-1790-9
S.M. Jung, Hyers-Ulam-Rassias Stability of Functional Equations in Mathematical Analysis, Hadronic Press, Palm Harbor, 2001.
D.O. Lee, Hyers-Ulam stability of an addtiive type functional equation, J. Appl. Math. and Computing, 13(1)(2)(2003), 471-477.
J.M. Rassias, On approximately of approximately linear mappings by linear mappings, J. Funct.Anal., 46(1982), 126-130. DOI: https://doi.org/10.1016/0022-1236(82)90048-9
J.M. Rassias, On approximately of approximately linear mappings by linear mappings, Bull. Sc.Math., 108(1984), 445-446.
J.M. Rassias and H.M. Kim, Generalized HyersUlam stability for general additive functional equations in quasi-β-normed spaces, J. Math. Anal. Appl., 356(2009), 302-309. DOI: https://doi.org/10.1016/j.jmaa.2009.03.005
J.M. Rassias, K.W. Jun and H.M. Kim, Approximate (m,n)−Cauchy - Jensen additive mappings in C ∗ -algebras, Acta Mathematica Sinica, 27(10)(2011), 1907-1922. DOI: https://doi.org/10.1007/s10114-011-0179-4
K. Ravi and M. Arunkumar, On a n- dimensional additive Functional Equation with fixed point Alternative, Proceedings of International Conference on Mathematical Sciences, 2007, Malaysia.
K. Ravi, M. Arunkumar and J.M. Rassias, On the Ulam stability for the orthogonally general Euler-Lagrange type functional equation, International Journal of Mathematical Sciences, 3(8)(2008), 36-47.
Th.M. Rassias, On the stability of the linear mapping in Banach spaces, Proc. Amer. Math. Soc., 72(1978), 297-300. DOI: https://doi.org/10.1090/S0002-9939-1978-0507327-1
S.M. Ulam, Problems in Modern Mathematics, Science Editions, Wiley, New York, 1964. (Chapter VI, Some Questions in Analysis: 1, Stability).
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