OICC Press Mathematical Analysis and its Contemporary Applications 1 1 2019 01 01 Cohen's factorization theorem for ternary Banach algebras 10.30495/maca.2019.679848 EN Ali Jabbari Young Researchers and Elite Club, Islamic Azad University, Ardabil Branch, Ardabil, Iran Journal Article 2019 01 01 In this paper, we prove Cohen's factorization theorem for ternary Banach algebras. approximate identity approximating set ternary Banach algebra