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Published online by Cambridge University Press: 20 November 2018
1. Introduction. Consider the (vector, n-component) system of differential equations
1,
where f(x) is of class C1. Let Ω denote a set of points, x, consisting of unrestricted solution paths x(t), so that the x(t) exist and lie in Ω for — ∞ < t < ∞.