Existence, multiplicity and infinite sol
โ
Qingliu Yao
๐
Article
๐
2005
๐
Elsevier Science
๐
English
โ 179 KB
The existence of n and infinitely many positive solutions is proved for the nonlinear fourth-order periodic boundary value problem where n is an arbitrary natural number and > -2 2 , 0 < < ( 1 2 + 2 2 ) 2 , / 4 + / 2 + 1 > 0. This kind of fourth-order boundary value problems usually describes the e