相关期刊:《Acta Mathematicae Applicatae Sinica》《Acta Mathematica Scientia》《Journal of Ocean Engineering and Science》《Chinese Quarterly Journal of Mathematics》更多>>
The aim in this paper is to cite instances in illustration of the incorrectness of certain oscillation theorems in Yan [1] . We also point out that the proof of the main theorems in [ 1 ] is not true, and express our ...