Geodesic
Normal forms of equivariant functions
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 2 (2020), pp. 51-55 Cet article a éte moissonné depuis la source Math-Net.Ru

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Equivariant analogues of the Morse lemma with parameters and the theorem on the normal form of a semiquasihomogeneous function are proved. 
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I. A. Proskurnin. Normal forms of equivariant functions. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 2 (2020), pp. 51-55. http://geodesic.mathdoc.fr/item/VMUMM_2020_2_a9/

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