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The Poincaré–Bendixson theorem for certain differential equations of higher order

Published online by Cambridge University Press:  14 November 2011

Russell A. Smith
Affiliation:
Department of Mathematics, University of Durham

Synopsis

By adapting its well-known proof, the Poincaré–Bendixson theorem, on the existence of periodic orbits of plane autonomous systems, is extended to vector differential equations of the form f(D)x + bφ(g(D)x) = 0. The only restrictions placed on the vector function φ(y) are that its Jacobian matrix should be continuous and lie within a suitably chosen ellintic ball.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1979

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