Isometry-invariant geodesics and the fundamental group

For finitely generated group that are linear over a field, a polynomial upper bound for these functions is established in [BM], and in the case of higher rank arithmetic groups,

Bustamante has proved that there exists an isomorphism between the fundamental group of a bound quiver and the fundamental group of the CW- complex associated, in the case where

— We prove a structure theorem for the isometry group Iso(M, g) of a compact Lorentz manifold, under the assumption that a closed subgroup has expo- nential growth.. We don’t

We give a counterexample to show that the quantum isometry group of a deformed finite dimensional spectral triple may not be isomorphic with a deformation of the quantum isometry

Cheeger-Gromoll [3] proved the following splitting theorem for complete manifolds of nonnegative sectional curvature by constructing an expanding filtration of M by compact

surfaces have been proved. For these surfaces Friedman and Morgan [FM] resp.. We will show, that for every fixed k there are infinitely many differentiably inequiv-.. alent

shown that diffeomorphic spherical space forms are isometric, Ikeda’s examples were not diffeomorphic.. examples involved finite fundamental groups and were rather

In characteristic zero, any finite group scheme is reduced, and its representations certainly form a semisimple category. GROTHENDIECK: Éléments de Géométrie