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Classifications and existence criteria for positive solutions of systems of nonlinear differential equations. (English) Zbl 1064.34005

Summary: Classification schemes for positive solutions of a class of second-order nonlinear differential systems are given in terms of their asymptotic magnitudes, and necessary as well as sufficient conditions for the existence of these solutions are provided, too.

MSC:

34A34 Nonlinear ordinary differential equations and systems
34C99 Qualitative theory for ordinary differential equations
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