Existence of critical point for abstract
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Qingdong Li; Zhi-Qing Han
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Article
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2006
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Elsevier Science
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English
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In this paper, using well-known variational methods, we prove a general abstract theorem on the existence of a critical point for resonant problems with unbounded nonlinearities and then apply it to ordinary and partial differential equations with generalized Ahmad-Lazer-Paul conditions. The abstrac