Abstract
In this article, we present various compactness and minimizations from very classical theorems such as Bolzano–Weierstrass theorem to modern theorems such as Palais–Smale conditions. Then apply them to assert the existence and multiplicity of solutions of partial differential equations.
Citation
Hwai-chiuan Wang. "ON THE COMPACTNESS AND THE MINIMIZATION." Taiwanese J. Math. 6 (4) 441 - 464, 2002. https://doi.org/10.11650/twjm/1500407470
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