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The degree of the gradient of a coercive functional

Published online by Cambridge University Press:  09 April 2009

Ross H. McKenzie
Affiliation:
Department of Physics Joseph Henry Laboratories Jadwin Hall, P. O. Box 708Princeton UniversityPrinceton, New Jersey 08544, U.S.A.
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Abstract

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An elementary proof is given of a theorem of Castro and Lazer that the degree of the gradient of a coercive functional on a large ball of Rn is one.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1984

References

Amann, H. (1982), ‘A note on degree theory for gradient mappings’, Proc. Amer. Math. Soc. 85, 591595.CrossRefGoogle Scholar
Castro, A. and Lazer, A. C. (1979), ‘Critical point theory and the number of solutions of a nonlinear Dirichlet problem’, Ann. Mat. Pura Appl. 70, 113137.CrossRefGoogle Scholar
Guillemin, V. and Pollack, A. (1974), Differential topology (Prentice Hall, Englewood Cliffs, N.J.).Google Scholar
McKenzie, R. H. (1982), Gravitational lenses (B. Sc. (Hons.) Thesis, Australian National University).Google Scholar
Milnor, J. (1963), Morse theory (Princeton University Press, Princeton, N.J.).CrossRefGoogle Scholar
Milnor, J. (1965), Topology from a differential viewpoint (University of Virginia Press, Charlottesville, Va.).Google Scholar
Nirenberg, L. (1981), ‘Variational and Topological methods in nonlinear problems’, Bull. Amer. Math. Soc. 4, 267302.CrossRefGoogle Scholar