A diameter pinching sphere theorem for positive Ricci curvature

A diameter pinching sphere theorem for positive Ricci curvature
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by Jyh Yang Wu

Proc. Amer. Math. Soc. 107 (1989), 797-802

DOI: https://doi.org/10.1090/S0002-9939-1989-0984822-X

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In this note we generalize Shiohama’s volume pinching sphere theorem to a diameter pinching sphere theorem for positive Ricci curvature.

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