Stability and hyperstability of orthogonally ring $*$-$n$-derivations and orthogonally ring $*$-$n$-homomorphisms on $C^*$-algebras
Subject Areas : Difference and functional equationsR. Gholami 1 , Gh. Askari 2 , M. Eshaghi Gordji 3
1 - Department of Mathematics, Islamic Azad University Dehloran Branch, Dehloran, Iran
2 - Department of Mathematics, Semnan University, P.O.Box 35195-363, Semnan, Iran
3 - Department of Mathematics, Semnan University, P.O.Box 35195-363, Semnan, Iran
Keywords: Stability and hyperstability, ring $*$-$n$-derivation, ring $*$-$n$-homomorphism, $C^*$-algebras,
Abstract :
In this paper, we investigate the generalized Hyers-Ulam-Rassias and the Isac and Rassias-type stability of the conditional of orthogonally ring $*$-$n$-derivation and orthogonally ring $*$-$n$-homomorphism on $C^*$-algebras. As a consequence of this, we prove the hyperstability of orthogonally ring $*$-$n$-derivation and orthogonally ring $*$-$n$-homomorphism on $C^*$-algebras.
[1] M. R. Abdollahpoura, R. Aghayaria, Th. M. Rassias, Hyers-Ulam stability of associated Laguerre differential equations in a subclass of analytic functions, J Math. Anal. Appl. 437 (2016), 605-612.
[2] J. Baker, The stability of the cosin equation. Proc Am. Math. Soc. 80 (1979), 242-246.
[3] J. Brzdek, On a method of proving the Hyers-Ulam stability of functional equations on restricted domains, Aust. J. Math. Anal. Appl. 6 (2009), 1-10.
[4] Y. J. Cho, Th. M. Rassias, R. Saadati, Stability of functional equations in random normed spaces, Springer Science and Business Media, 2013.
[5] Y. J. Cho C. Park, T. M. Rassias, R. Saadati, Stability of functional equations in Banach algebras, Springer, Cham, 2015.
[6] J. Chung, Stability of a conditional equation, Aequat. Math. 83 (2012), 313-320
[7] J. Chung, Stability of functional equations on restricted domains in groupand their asymptotic behaviors, Comput. Math. Appl. 60 (2010), 2653-2665.
[8] Z. Gajda, On stability of additive mappings. Int. J. Math. Math. Soc. 14 (1991), 431-434.
[9] P. Gavruta, A generalization of the Hyers-Ulam-Rassias stability of approximately additive mappings, J. Math. Anal. Appl. 184 (1994), 431-436.
[10] P. Gavruta, L. Gavruta, A new method for the generalized Hyers-Ulam-Rassias stability, Int. Nonlinear Anal. Appl. 1 (2010), 11-18.
[11] S. Gudder, D. Strawther, Orthogonally additive and orthogonally increasing functions on vector space, Pacic J. Math. 58 (1975), 427-436.
[12] D. H. Hyers, On the stability of the linear functional equqtion. Proc. Natl. Acad. Soc. 27 (1941), 222-224.
[13] G. Isac, Th. M. Rassias, On the Hyers-Ulam stability of - additive mappings, J. Approx. Theory. 72 (1993), 131-137.
[14] P. Kannappan, Functional equations and inequalities with applications. Springer Science and Business Media, 2009.
[15] Y. H. Lee, S. M. Jung, M. Th. Rassias, Uniqueness theorems on functional inequalities concerning cubic-quadratic-additive equation, J. Math. Inequal. 12 (2018), 43-61.
[16] Y. H. Lee, S. M. Jung, M. Th. Rassias, On an n-dimensional mixed type additive and quadratic functional equation, Appl. Math. Comput. 228 (2014), 13-16.
[17] S. M. Jung, Hyers-Ulam stability of Jensens equations and its application, Proc. Amer. Math. soc. 126 (1998), 3137-3143.
[18] S. M. Jung, Hyers-Ulam-Rassias stability of functional equations in nonlinear analysis, Springer Science and Business Media, 2011.
[19] J. M. Rassias, On Approximation of approximately linear mappings by linear mappings, J. Funct. Anal. 46 (1982), 126-130.
[20] J. M. Rassias, On stability of the Euler-Lagrange functional equation, Chin. J. Math. 20 (1992), 185-190.
[21] J. M. Rassias, Complete solution of the multi-dimensional of Ulam, Discuss. Math. 14 (1994), 101-107.
[22] J. M. Rassias, Solution of a problem of Ulam, J. Approx. Theory. 57 (1989), 268-273.
[23] Th. M. Rassias, On the stability of the linear mapping in Banach space. Proc. Amer. Math. Soc. 72 (1978), 297-300.
[24] J. M. Rassias, M. J. Rassias, On the Ulam stability of Jensen and Jensen type mappings on restricted domains, J. Math. Anal. Appl. 281 (2003), 516-524.
[25] P. Semrl, The functional equation of multiplicative derivation is hyperstable on standard operator algebras, Integ. Equation. Operator. Theory. 18 (1994), 118-122.
[26] F. Skof, Sull approssimazione delle apphcazioni localmente -additive, Torino Cl. Sci. Fis. Math. Nat. 117 (1983), 377-389.
[27] S. M. Ulam, Problem in modern mathematiics, Chapter VI. Science Editions. New Yoek, 1960.