Dong Qinxi, Huang Xiankai. On the Existence of Harmonic Solutions for Higher-Order Lienard Systems[J]. Applied Mathematics and Mechanics, 1995, 16(12): 1087-1090.
Citation:
Dong Qinxi, Huang Xiankai. On the Existence of Harmonic Solutions for Higher-Order Lienard Systems[J]. Applied Mathematics and Mechanics, 1995, 16(12): 1087-1090.
Dong Qinxi, Huang Xiankai. On the Existence of Harmonic Solutions for Higher-Order Lienard Systems[J]. Applied Mathematics and Mechanics, 1995, 16(12): 1087-1090.
Citation:
Dong Qinxi, Huang Xiankai. On the Existence of Harmonic Solutions for Higher-Order Lienard Systems[J]. Applied Mathematics and Mechanics, 1995, 16(12): 1087-1090.
In this paper,by using of the theory of coincidence degree,we obtain the new conditions which guarantee the existence of harmonic solutions for Liénard Systems Our resuls do not require that the damping must be positive.