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JOURNALS // Moscow Mathematical Journal // Archive

Mosc. Math. J., 2005 Volume 5, Number 1, Pages 171–206 (Mi mmj190)

This article is cited in 18 papers

Rigidity theorems for generic holomorphic germs of dicritic foliations and vector fields in $(\mathbb C^2,0)$

L. Ortiz-Bobadil'yaa, È. Rosales-Gonzáleza, S. M. Voroninb

a National Autonomous University of Mexico
b Chelyabinsk State University

Abstract: We consider the class $\mathcal V_{n+1}^d$ of dicritical germs of holomorphic vector fields in $(\mathbb C^2,0)$ with vanishing $n$-jet at the origin for $n\ge 1$. We prove, under some genericity assumptions, that the formal equivalence of two generic germs implies their analytic equivalence. A similar result is also established for orbital equivalence. Moreover, we give formal, orbitally formal, and orbitally analytic classifications of generic germs in $\mathcal V_{n+1}^d$ up to a change of coordinates with identity linear part.

Key words and phrases: Dicritic foliations, dicritic vector fields, rigidity, formal equivalence, analytic equivalence.

MSC: 32S70, 32S05, 32S30, 34A25, 34C20, 57R30

Received: March 6, 2003

Language: English

DOI: 10.17323/1609-4514-2005-5-1-171-206



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