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Positive solutions of p-type retarded functional differential equations. (English) Zbl 1109.34058
The authors consider systems of retarded functional-differential equations with unbounded delay and finite memory. After defining this concept, the authors give criteria for the existence of positive solutions (positive = positive with respect to all coordinates). The main result (too complicated to be stated here) deals with the nonlinear case, but is then reformulated for the linear case.
MSC:
34K25Asymptotic theory of functional-differential equations