Resonance and Nonresonance Periodic Value Problems of First‐Order Differential Systems
Fengqin Zhang, Jurang Yan · Discrete Dynamics in Nature and Society · 2010
Resonance and nonresonance periodic value problems of first‐order differential systems are studied. Several new existence and uniqueness of solutions for the above problems are obtained. To establish such results sufficient conditions of limit forms are given. A necessary and sufficient condition for existence of nontrivial solution is also proved.