Solutions of asymptotically linear opera
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Kung Ching Chang
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Article
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1981
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John Wiley and Sons
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English
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In a recent paper, H. Amann and E. Zehnder [ 11 studied existence problems for equations of the form (1) in a real Hilbert space H. Here A is a selfadjoint linear operator and F is a potential operator, mapping H continuously into itself. It is well known that equation ( 1) is a good framework for