Abstract
Let A, B, and X be complex algebras, θ : B -> X be an algebra homomorphism, and let A be an X-bimodule. We define a product on A × B as (a1, b1)(a2, b2) = (a1a2 + a1 · θ(b2) + θ(b1) ◦ a2, b1b2) for all (a1, b1), (a2, b2) ∈ A × B and write A × B with this product by A ×θ B. We shall study some basic properties of A ×θ B. When A, B and X are Banach algebras, A is a Banach X-bimodule, and θ is a continuous homomorphism with the norm at most 1, we determine the ideals of A ×θ B of a certain type, the Gelfand space of this Banach algebra, and the module multipliers of this Banach algebra.
Keywords
- Module Lau-product of Banach algebras,
- ideals,
- Gelfand space,
- module multipliers
References
- F. Abtahi, A. Ghafarpanah, and A. Rejali, Biprojectivity and biflatness of Lau product of Banach algebras defined by a Banach algebra morphism, Bull. Aust. Math. Soc., 91(1)(2015),
- D. E. Bagha and H. Azaraien, Module amenability and module biprojectivity of θ-Lau Product of Banach algebras, J. Liner Top. Alg., 03(2014), 185-196.
- S. J. Bhatt and P. A. Dabhi, Arens regularity and amenability of Lau product of Banach algebras defined by a Banch algebra morphism, Bull. Aust. Math. Soc., 87(2013), 195-206.
- P. A. Dabhi and S. K. Patel, Spectral properties of the Lau product A×θ B of Banach algebras, Ann. Funct. Anal., 9(2)(2018), 246-257.
- H. R. Ebrahimi Vishki and A. R. Khoddami, Character inner amenability of certain Banach algebras, Colloq. Math., 122(2)(2011), 225-232.
- E. Kaniuth, The Bochner-Schoenberg-Eberlein property and spectral synthesis for certain Banach algebra products, Canad. J. Math., 67(4)(2015), 827-847.
- A. T. Lau, Analysis on a class of Banach algebras with applications to harmonic analysis on locally compact groups and semigroups, Fund. Math., 118(3)(1983), 161-175.
- M. S. Monfared, On certain products of Banach algerbras with applications to harmonic analyisis, Studia Math., 178(2007), 277-294.
- M. S. Monfared, Character amenability of Banach algebras, Math. Proc. Cambridge Philos. Soc., 144(3)(2008), 697-706.
- M. Ramezanpour and S. Barootkoob, Generalized module extension Banach algebras: Derivation and Weak amenability, Quaest. Math., 40(4)(2017), 451-465. 1Department of Mathematics, Institute of Infrastructure Technology Research and Management (IITRAM), Ahmedabad - 380026, Gujarat, India
10.30495/maca.2022.1955532.1055