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Topics in Critical Point Theory, Hardcover by Perera, Kanishka; Schechter, Martin, ISBN 110702966X, ISBN-13 9781107029668, Brand New, Free P&P in the UK "Critical point theory has become a very powerful tool for solving many problems. The theory has enjoyed significant development over the last several years. The impetus for this development is the fact that many new problems could not be solved by the older theory. In this book we present more recent developments in the subject that do not seem to be covered elsewhere, including some results of the authors dealing with nonstandard linking geometries and sandwich pairs"--
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