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References
- ↑ "Comparison theorem - Encyclopedia of Mathematics". www.encyclopediaofmath.org. Retrieved 2019-12-13.
- ↑ See also: Lyapunov comparison principle
- ↑ "Differential inequality - Encyclopedia of Mathematics". www.encyclopediaofmath.org. Retrieved 2019-12-13.
- ↑ Jeff Cheeger and David Gregory Ebin: Comparison theorems in Riemannian Geometry, North Holland 1975.
- ↑ M. Berger, "An Extension of Rauch's Metric Comparison Theorem and some Applications", Illinois J. Math., vol. 6 (1962) 700–712
- ↑ Weisstein, Eric W. "Berger-Kazdan Comparison Theorem". MathWorld .
- ↑ F.W. Warner, "Extensions of the Rauch Comparison Theorem to Submanifolds" (Trans. Amer. Math. Soc., vol. 122, 1966, pp. 341–356
- ↑ R.L. Bishop & R. Crittenden, Geometry of manifolds
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