Some generalizations of the Morse lemma
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Optimal control, differential equations and smooth optimization, Tome 220 (1998), pp. 142-156
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@article{TM_1998_220_a8,
author = {A. F. Izmailov},
title = {Some generalizations of the {Morse} lemma},
journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
pages = {142--156},
publisher = {mathdoc},
volume = {220},
year = {1998},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/TM_1998_220_a8/}
}
A. F. Izmailov. Some generalizations of the Morse lemma. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Optimal control, differential equations and smooth optimization, Tome 220 (1998), pp. 142-156. http://geodesic.mathdoc.fr/item/TM_1998_220_a8/