Approximate left $\varphi$-biprojectivity of $\theta$-Lau product algebras

Abstract

We continue [8] and we discuss approximately left ϕ-biprojectivity for θ-Lau product algebras. We give some Banach algebras among the category of θ-Lau product algebras which are not approximately left ϕ-biprojective. In fact, some class of matrix algebras under the notion of approximate left ϕ-biprojectivity is also discussed here.

Keywords

• approximate left ϕ-biprojectivity
• approximate left ϕ-amenability
• θ-lau product