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## Comparison of some sufficient conditions for smooth linearization. (English)

Authors: Bronstein I., Kopanskij A.

### Abstract

Conditions sufficient for smooth linearization of a system of differential equations near a hyperbolic singular point are considered. It is shown that the condition \$T(k)\$ introduced by A.D.Bruno is more restrictive than \$\frak (k)\$.

Institutul de Matematică Academia de Ştiinţe a Moldovei
str. Academiei 5, Chişinău MD-2028, Moldova