National Natural Science Foundation of China(Grant No.10901118);Elite Scholar Program in Tianjin University,P.R.China。
In this paper,the multiplicity of homoclinic solutions for second order non-autonomous Hamiltonian systemsü(t)-L(t)u(t)+▽uW(t,u(t))=0 is obtained via a new Symmetric Mountain Pass Lemma established by Kajikiya,wher...
Supported by National Natural Science Foundation of China (11371276,10901118);Elite Scholar Program in Tianjin University,P.R.China
The multiplicity of periodic solutions for a class of second order Hamiltonian system with superquadratic plus subquadratic nonlinearity is studied in this paper.Obtained via the Symmetric Mountain Pass Lemma,two resu...
Supported by National Natural Science Foundation of China(Grant Nos.11371276,10901118);Elite Scholar Program in Tianjin University,P.R.China
A class of second order non-autonomous Hamiltonian systems with asymptotically quadratic conditions is considered in this paper.Using Fountain Theorem,one multiplicity result of periodic solutions is obtained,which im...
Project supported by the National Natural Science Foundation of China (Nos.11071127,10621101,10901118);the 973 project of the Ministry of Science and Technology of China (No.2011CB808002)
By using the index theory for linear bounded self-adjoint operators in a Hilbert space related to a fixed self-adjoint operator A with compact resolvent,the authors discuss the existence and multiplicity of solutions ...