The phase-isometries between the unit sphere of lp(Γ,H)-type spaces

Meimei Song, Jinshang Du


In this paper, Suppose that f: SX → SY is a surjective phase-isometry between the unit spheres of two real lp(Γ,H)-type spaces X and Y. We prove that the mapping f is phase equivalent to an isometry. Otherwise, this isometry is the restriction of a linear isometry between the whole spaces, i.e., this isometry on the unit sphere can be linearly extended into isometry in the whole space.

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Published: 2021-11-26

How to Cite this Article:

Meimei Song, Jinshang Du, The phase-isometries between the unit sphere of lp(Γ,H)-type spaces, Adv. Fixed Point Theory, 11 (2021), Article ID 19

Copyright © 2021 Meimei Song, Jinshang Du. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Advances in Fixed Point Theory

ISSN: 1927-6303

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