Isotropic Jacobi Fields, and Jacobi's Equations on Riemannian Homogeneous Spaces.
Large time behavior of the heat kernel: the parabolic ...-potential alternative.
Isoperimetric Constants of Manifolds with Small Handles.
Cylinders on surfaces.
The first eigenvalue of the laplacian on manifolds of non-negative curvature
The Lenz shift and wiener sausage in riemannian manifolds
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