Speaker：Longfa Sun (North China Electric Power University)

Time：2026-1-28 17:00

Location：Conference Room S106 at Experiment Building at Haiyun Campus

Abstract:

In this talk, we first present a sharp universal weakly stable formula for perturbed norm-additive maps between Banach spaces. Making use of it, we give the results about  the  Qian stability  for non-surjective maps and the Hyers-Ulam stability for almost surjective maps.  At the end, we present some results about the non-surjective perturbed norm-additive maps between the continuous function spaces.