generalized upper and lower solutions;
coincidence degree;
monotone iteration;
integro_differential equation of mixed typeanti GCRV and anti STIV activity in various cultured fish cells. Inhibition of viral replication in cells was dependent;
D O I:
暂无
中图分类号:
O175 [微分方程、积分方程];
学科分类号:
070104 ;
摘要:
The existence of at least one solution and the existence of extreme solutions of periodic boundary value problems for first_order integro_differential equations of mixed type are studied,in the presence of generalized upper and lower solutions. The discussion is based on new comparison theorems and coincidence degree and monotone iterative methods.