Generalized derivations on certain Banach algebras

Document Type : Research Paper

Authors

1 Department of Mathematical Sciences, Isfahan University of Technology, Isfahan 84156-83111, Iran.

2 Department of Mathematical Sciences, Isfahan University of Technology, Isfahan 84156-83111, Iran

Abstract

In this paper, we apply the well-known results concerning derivations and generalized derivations of commutative Banach algebras and of prime rings to certain Banach algebras that are neither commutative Banach algebras nor prime rings. For example, we investigate the truth of Singer-Wermer conjecture and Posner's second theorem for this class of Banach algebras.

Keywords


[1] M. H. Ahmadi Gandomani and M. J. Mehdipour, Generalized derivations on some convolution algebras, Aequationes Math., 92 (2018) 223–241.
[2] F. F. Bonsall and J. Duncan, Complete normed algebras, Springer-Verlag, New York-Heidelberg, 1973.
[3] H. G. Dales, Banach algebras and automatic continuity, London Mathematical Society Monographs.
New Series, 24, Oxford Science Publications. The Clarendon Press, Oxford University Press, New York, 2000.
[4] H. G. Dales and A. T.-M. Lau, The second duals of Beurling algebras, Mem. Amer. Math. Soc., 177 no. 836 (2005).
[5] A. Ebrahimzadeh Esfahani and M. Nemati, Generalized derivations on certain Banach algebras, (2022), arXiv:2201.06359.
[6] P. Eymard, L’algeĢ€bre de Fourier d’un groupe localement compact, Bull. Soc. Math. France, 92 (1964) 181–236.
[7] E. E. Granirer, On group representations whose C ∗ -algebra is an ideal in its von Neumann algebra, Ann. Inst. Fourier (Grenoble), 29 (1979) 37–52.
[8] A. T. -M. Lau, Uniformly continuous functionals on the Fourier algebra of any locally compact group, Trans. Amer. Math. Soc. 251 (1979) 39–59.
[9] A. T.-M. Lau, The second conjugate algebra of the Fourier algebra of a locally compact group, Trans. Amer. Math. Soc., 267 (1981) 53–63.
[10] S. Maghsoudi and R. Nasr-Isfahani, On the maximal and minimal left ideals of certain Banach algebras on locally compact groups, Results Math., 62 (2012) 157–165.
[11] M. Mathieu and G. J. Murphy, Derivations mapping into the radical, Arch. Math. (Basel), 57 (1991) 469–474.
[12] M. J. Mehdipour and Z. Saeedi, Derivations on group algebras of a locally compact abelian group, Monatsh. Math., 180 (2016) 595–605.
[13] E. C. Posner, Derivations in prime rings, Proc. Am. Math. Soc., 8 (1957) 1093–1100.
[14] I. M. Singer and J. Wermer, Derivations on commutative normed algebras, Math. Ann., 129 (1955) 260–264.
[15] M. Thomas, The image of a derivation is contained in the radical, Ann. Math., 128 (1988) 435–460.
[16] J. Zemanek, Spectral radius characterizations of commutativity in Banach algebras, Stud. Math., 61 (1977) 257–268.