THE ISOMETRIC EXTENSION OF AN INTO MAPPING FROM THE UNIT SPHERE Se(Г) TO THE UNIT SPHERE S(E) Dedicated to Professor Wu Wenjun on the occasion of his 90th birthday

摘要

This is such a article to consider an "into" isometric mapping between two unit spheres of two infinite dimensional spaces of different types.In this article, we find a useful condition (using the Krein-Milman property) under which an into-isometric mapping from extended.