We consider a system x'=f(t,x) of n first order differential equations, where all coordinate functions are weakly concave in x and all off-diagonal entries in the Jacobi matrix are nonnegative, i. e., a cooperative system. We give a characterization of those initial points, for which the corresponding Poincare-mapping and some related mappings assume extreme values.
|Effective start/end date||01/01/1996 → …|
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