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Applied Analysis
This note covers the following topics: Metric and Normed Spaces, Continuous Functions, The Contraction Mapping Theorem, Topological Spaces, Banach Spaces, Hilbert Spaces, Fourier Series, Bounded Linear Operators on a Hilbert Space, The Spectrum of Bounded Linear Operators, Linear Differential Operators and Green's Functions, Distributions and the Fourier Transform, Measure Theory and Function Spaces, Differential Calculus and Variational Methods.
Author(s): John Hunter and Bruno Nachtergaele
NA Pages 
Introduction to Functional Analysis by Christian Potzsche
This note explains the following topics: basic structures, Topological structures and boundary value problems.
Author(s): Munich University of Technology
73 Pages
Functional analysis lecture notes
This note covers normed linear spaces, Banach spaces, Linear transformations, Integration, Hilbert spaces and fourier analysis.
Author(s): T B Ward, University of East Anglia
73 Pages
Functional Analysis by ETH Zurich
This note covers the following topics: Principles of Functional Analysis, The Weak and Weak Topologies, Fredholm Theory, Spectral Theory, Unbounded Operators, Semigroups of Operators.
Author(s): Theo Buhler and Dietmar A. Salamon, ETH Zurich
427 Pages
Functional Analysis by Christian Remling
This note explains the following topics: Metric and topological spaces, Banach spaces, Consequences of Baire's Theorem, Dual spaces and weak topologies, Hilbert spaces, Operators in Hilbert spaces, Banach algebras, Commutative Banach algebras, and Spectral Theorem.
Author(s): Christian Remling
123 Pages