The Analyst’s Gambit: A Second Course in Functional Analysis is a textbook written to serve a graduate course in Functional Analysis. It provides a sequel to the author’s other volume, A First Course in Functional Analysis, but it is not necessary to have read one in order to make use of the other. As a graduate text, the reader is assumed to have taken undergraduate courses in set theory, calculus, metric spaces and topology, complex analysis, measure theory, or, alternatively, have enough mathematical maturity to carry on without having seen every particular fact that is used. A particular strength of the book is that it includes numerous applications. Besides being engaging and interesting in their own right, these applications also illustrate how the functional analysis is used in other parts of mathematics. The applications to problems from varied fields (PDEs, Fourier series, group theory, neural networks, topology, etc.) constitute a gratifying external motivation for studying functional analysis. There are also applications of the material to functional analytic problems (Lomonosov’s invariant subspace theorem, the spectral theorem, Stone’s theorem), showcasing the power of the results as well as the elegance and unity of the theory. Features Rich variety of exercises Can be used as the primary textbook for a second course in functional analysis Emphasis on substantial and modern applications