Over the last 15 years I have given lectures on a variety of problems in nonUnear functional analysis and its appUcations. In doing this, I have recommended to my students a number of excellent monographs devoted to specialized topics, but there was no complete survey-type exposition of
nonUnear functional analysis making available a quick survey to the wide range of readers including mathematicians, natural scientists, and engineers
who have only an elementary knowledge of linear functional analysis.