Tingley's sphere-isometry problem
This catalogue contains one manuscript claiming that a surjective isometry between unit spheres of real Banach spaces extends uniquely to a real-linear isometry of the spaces. The overview follows its proof by maximizing the distance defect between different radii, aligning chords, and eliminating the defect through convexity.
Proof overview availableThe catalogue guide leads to the article, its external inputs, and the bilingual PDF editions.
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