Green function;
lower and upper solutions;
nonlinear differential equation of second order;
singular boundary value problem;
Sturm-Liouville operator;
topological degree;
D O I:
10.1016/S0362-546X(98)00140-0
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
The compact interval [a,b] (a<b), function r∈C(]a,b[) such that r(t)>0 for all t∈]a,b[ and the three corresponding cases: 1/r∈L1(a,b); 1/r∈L1[a) and 1/r is not a member of the set L1(b]; and 1/r is not a member of the set L1[a) and 1/r is not a member of the set L1(b], are analyzed. Theorems are proved which gives solution to the corresponding cases.