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Search: MSC category 53C23 ( Global geometric and topological methods (a la Gromov); differential geometric analysis on metric spaces )

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1. CMB 2011 (vol 55 pp. 723)

Gigli, Nicola; Ohta, Shin-Ichi
 First Variation Formula in Wasserstein Spaces over Compact Alexandrov Spaces We extend results proved by the second author (Amer. J. Math., 2009) for nonnegatively curved Alexandrov spaces to general compact Alexandrov spaces $X$ with curvature bounded below. The gradient flow of a geodesically convex functional on the quadratic Wasserstein space $(\mathcal P(X),W_2)$ satisfies the evolution variational inequality. Moreover, the gradient flow enjoys uniqueness and contractivity. These results are obtained by proving a first variation formula for the Wasserstein distance. Keywords:Alexandrov spaces, Wasserstein spaces, first variation formula, gradient flowCategories:53C23, 28A35, 49Q20, 58A35

2. CMB 2004 (vol 47 pp. 492)

Boumuki, Nobutaka
 Isotropic Immersions with Low Codimension of Complex Space Forms into Real Space Forms The main purpose of this paper is to determine isotropic immersions of complex space forms into real space forms with low codimension. This is an improvement of a result of S. Maeda. Categories:53B25, 53C235