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1954 (1)

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On the number of limit cycles of the equations dy/dx = P(x,y,)/Q(x,y) where P and Q are polynomials of 2nd degree
Authors: PETROVSKII, Ivan G. --- LANDIS, Evgenii M.

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EQUATIONS DIFFERENTIELLES NON LINEAIRES --- CYCLES LIMITES

Book

On the number of limit cycles which appear with the variation of coefficients from an equilibrum position of focus of center type [Matematičeskiĭ Sbornik (N.S.) 30(72), 181-196 (1952)]
Author: Bautin, N. N.
Year: 1954 Publisher: Providence : American Mathematical Society,

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Abstract

Keywords
Équations différentielles non linéaires. --- Differential equations, Nonlinear. --- Cycles limites. --- Limit cycles. --- Equations differentielles ordinaires --- Theorie qualitative

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