منابع مشابه
Hyers-ulam Stability of Isometries
Let X and Y be real Banach spaces. A mapping q5 : X --t Y is called an &-isometry if 1 IIq5(z) ~$(y)jl 11% yI/ I 5 E holds for all z,y E X. If q5 is surjective, then its distance to the set of all isometries of X onto Y is at most yx~, where yx denotes the Jung constant of X.
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ژورنال
عنوان ژورنال: Kyungpook mathematical journal
سال: 2015
ISSN: 1225-6951
DOI: 10.5666/kmj.2015.55.1.103