<p>The series is devoted to the publication of high-level monographs which cover the whole spectrum of current nonlinear analysis and applications in various fields, such as optimization, control theory, systems theory, mechanics, engineering, and other sciences. One of its main objectives is to make available to the professional community expositions of results and foundations of methods that play an important role in both the theory and applications of nonlinear analysis. Contributions which are on the borderline of nonlinear analysis and related fields and which stimulate further research at the crossroads of these areas are particularly welcome. </p> <p><strong>Editor-in-Chief</strong><br>Jürgen Appell, Würzburg, Germany </p> <p><strong>Honorary and Advisory Editors</strong><br>Catherine Bandle, Basel, Switzerland </p> <p>Jiguang Bao, Beijing, China </p> <p>Avner Friedman, Columbus, Ohio, USA<br>Manuel del Pino, Bath, UK, and Santiago, Chile<br>Mikio Kato, Nagano, Japan </p> <p>Guozhen Lu, Storrs, CT, USA<br>Wojciech Kryszewski, Toruń, Poland<br>Vicenţiu D. Rădulescu, Kraków, Poland<br>Simeon Reich, Haifa, Israel </p> <p>Please submit book proposals to <a>Jürgen Appell</a>. </p> <p><strong>Titles in planning include</strong><br>Ireneo Peral Alonso and Fernando Soria, Elliptic and Parabolic Equations Involving the Hardy–Leray Potential (2020)<br>Cyril Tintarev, Profile Decompositions and Cocompactness: Functional-Analytic Theory of Concentration Compactness (2020)<br>Takashi Suzuki, Semilinear Elliptic Equations: Classical and Modern Theories (2021) </p>