Bishop's Inequality
Let V(r) be the volume of a ball of radius r in a complete n-dimensional Riemannian manifold with Ricci curvature tensor >=(n-1)kappa. Then V(r)<=V_kappa(r), where V_kappa is the volume of a ball in a space having constant sectional curvature. In addition, if equality holds for some ball, then this ball is isometric to the ball of radius r in the space of constant sectional curvature kappa.
See also
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References
Bishop, R. L. and Crittenden, R. Geometry of Manifolds. Providence, RI: Amer. Math. Soc., 2001.Chavel, I. Riemannian Geometry: A Modern Introduction. New York: Cambridge University Press, p. 123, 1994.Referenced on Wolfram|Alpha
Bishop's InequalityCite this as:
Weisstein, Eric W. "Bishop's Inequality." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/BishopsInequality.html