Ulam stability of bihomomorphisms and biderivations in Banach algebras

• Main Authors: Choonkil Park, Siriluk Paokanta, Raweerote Suparatulatorn
• Format: Journal
• Published: 2020
• Subjects: Mathematics
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85081725094&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/68449
• Institution: Chiang Mai University

© 2020, Springer Nature Switzerland AG. Using the fixed point method and the direct method, we prove the Hyers–Ulam stability of biderivations and bihomomorphisms in Banach algebras and unital C∗-algebras, associated with the bi-additive functional inequality: ‖f(x+y,z+w)+f(x+y,z-w)+f(x-y,z+w)+f(x-y...