Abstract
We study the stability of critical points of a real valued C1 function f on a Finsler-manifold M under small perturbations of f. We give a topological description of certain (possibly degenerate) critical levels of f and show that for a certain class of functions g on M the function f+g has in a prescribed neighbourhood of the critical level of f a set of critical points the category of which is bounded below by an integer given by the topological description of that critical level of f.
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This work was supported by Grant No. 2.464.71 of the F.N.S.R.S.
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Reeken, M. Stability of critical points under small perturbations Part I: Topological theory. Manuscripta Math 7, 387–411 (1972). https://doi.org/10.1007/BF01644075
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DOI: https://doi.org/10.1007/BF01644075