Almost invariant submanifolds for compact group actions
Journal of the European Mathematical Society, Tome 2 (2000) no. 1, pp. 53-86
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Abstract. We define a C1 distance between submanifolds of a riemannian manifold M and show that, if a compact submanifold N is not moved too much under the isometric action of a compact group G, there is a G-invariant submanifold C1-close to N. The proof involves a procedure of averaging nearby submanifolds of riemannian manifolds in a symmetric way. The procedure combines averaging techniques of Cartan, Grove/Karcher, and de la Harpe/Karoubi with Whitney's idea of realizing submanifolds as zeros of sections of extended normal bundles.
Alan Weinstein. Almost invariant submanifolds for compact group actions. Journal of the European Mathematical Society, Tome 2 (2000) no. 1, pp. 53-86. doi: 10.1007/s100970050014
@article{JEMS_2000_2_1_a1,
author = {Alan Weinstein},
title = {Almost invariant submanifolds for compact group actions},
journal = {Journal of the European Mathematical Society},
pages = {53--86},
year = {2000},
volume = {2},
number = {1},
doi = {10.1007/s100970050014},
url = {http://geodesic.mathdoc.fr/articles/10.1007/s100970050014/}
}
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