2025/10/04 by Huang, Changchi, Peng, Jigen, Tang, Yuchao
#46B20 #47H05 #47H10 #FOS: Mathematics #Functional Analysis (math.FA)
paper · doi:10.48550/arxiv.2510.03774
Let E be a Banach space, and let J: E → E* denote the normalized duality mapping. In this paper, we establish an upper bound for ‖Jx - Jy‖ in q-uniformly smooth Banach spaces, where the bound is expressed in terms of a relatively simple function of ‖x - y‖. Subsequently, we derive the Hölder property of mappings of firmly nonexpansive type in 2-uniformly convex and q-uniformly smooth Banach spaces (1