G. S. Rychkov, “A proof of the presence of an infinite number of limit cycles for the equation $\ddot y+\mu\ sin$ $(\dot y+\theta )+y=0$”, Differ. Uravn., 1973, Volume 9, Number 8,Pages 1540

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Differ. Uravn., 1973 Volume 9, Number 8, Pages 1540–1542 (Mi de1990)

Short Communications

A proof of the presence of an infinite number of limit cycles for the equation $\ddot y+\mu\ sin$ $(\dot y+\theta )+y=0$

G. S. Rychkov

Moscow

UDC: 517.925.12

Received: 07.04.1972

Fulltext: PDF file (283 kB)

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