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Principles of functional analysis. (English) Zbl 0211.14501
 46-01 Introductory exposition (textbooks, tutorial papers, etc.) pertaining to functional analysis 46Axx Topological linear spaces and related structures 46B10 Duality and reflexivity in normed linear and Banach spaces 46C05 Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) 47A53 (Semi-) Fredholm operators; index theories 47B06 Riesz operators; eigenvalue distributions; approximation numbers, $$s$$-numbers, Kolmogorov numbers, entropy numbers, etc. of operators 46Hxx Topological algebras, normed rings and algebras, Banach algebras