NONLINEAR BOUNDARY VALUE PROBLEMS;
A PRIORI BOUNDS;
UPPER AND LOWER FUNCTIONS;
D O I:
10.1216/rmjm/1181072248
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Existence results formulated in terms of upper and lower functions and Nagumo type conditions are presented for fourth order equations and systems of two second order equations with nonlinear boundary constraints.