In this paper, sane sufficient conditions are obtained for the oscillation for solutions of systems of high order partial differential equations of neutral type.
基金Supported by the National Natural Science Foundation of China (11201084,61803095)Natural Science Foundation of Guangdong Province (2017A030313031,18ZK0174)。
文摘In this paper, sane sufficient conditions are obtained for the oscillation for solutions of systems of high order partial differential equations of neutral type.