


Paper's Title:
Stability of an Almost Surjective epsilonIsometry in The Dual of Real Banach Spaces
Author(s):
Minanur Rohman, Ratno Bagus Edy Wibowo, Marjono
Department of Mathematics, Faculty of
Mathematics and Natural Sciences,
Brawijaya University,
Jl. Veteran Malang 65145,
Indonesia.
Email:
miminanira@gmail.com
Department of Mathematics, Faculty of
Mathematics and Natural Sciences,
Brawijaya University,
Jl. Veteran Malang 65145,
Indonesia.
Email:
rbagus@ub.ac.id
Department of Mathematics, Faculty of
Mathematics and Natural Sciences,
Brawijaya University,
Jl. Veteran Malang 65145,
Indonesia.
Email:
marjono@ub.ac.id
Abstract:
In this paper, we study the stability of epsilonisometry in the dual of real Banach spaces. We prove that the almost surjective epsilonisometry mapping is stable in dual of each spaces. The proof uses Gâteaux differentiability space (GDS), weakstar exposed points, normattaining operator, and some studies about epsilonisometry that have been done before.
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