This textbook covers basic results of functional analysis and also some additional topics which are needed in theoretical numerical analysis. PDF | On Jan 1, 2009, Kendall E. Atkinson and others published Theoretical Numerical Analysis: A Functional Analysis Framework | Find, read and cite all the Theoretical Numerical Analysis: A Functional Analysis Framework of the connections between functional analysis and the theory of functions of oneKendall Atkinson, Weimin Han's Theoretical Numerical Analysis (3rd Edition), this textbook prepares graduate students for research in numerical