By means of the continuation theorem of coincidence degree theory, some newresults on the non-existence, existence and unique existence of periodic solutions for a kind ofsecond order neutral functional differential e...By means of the continuation theorem of coincidence degree theory, some newresults on the non-existence, existence and unique existence of periodic solutions for a kind ofsecond order neutral functional differential equation are obtained.展开更多
基金The project is supported by the National Natural Science Foundation 19871005
文摘By means of the continuation theorem of coincidence degree theory, some newresults on the non-existence, existence and unique existence of periodic solutions for a kind ofsecond order neutral functional differential equation are obtained.
