General notions, definitions, and results
Below, a number of notions, terms and facts are given which will be used throughout the book. Many facts of functional analysis are already considered classical. However, we derive some of them not in the form of theorems, without reference of their authors. One can find the proofs of these facts in any textbook on functional analysis. For some special results we will refer the reader to the corresponding literature.
KeywordsHilbert Space Banach Space Regular Point General Notion Selfadjoint Operator
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