期刊名称:International Journal of Mathematics and Mathematical Sciences
印刷版ISSN:0161-1712
电子版ISSN:1687-0425
出版年度:1989
卷号:12
期号:3
页码:615-618
DOI:10.1155/S016117128900075X
出版社:Hindawi Publishing Corporation
摘要:
Upper and lower solutions are used in establlsning global existence results for certain two–point boundary value problems for y ‴ = f ( x , y , y ′ , y ″ ) and y ( n ) = f ( x , y , y ′ , ... , y ( n − 1 ) ) .