This chapter contains various complements that have not been incorporated in the main body of the book in order to keep the presentation more compact. They are connected to Chapters 1–7. Some of the proofs are very sketchy. Several proofs have been omitted, and the interested reader is invited to consult the references.
KeywordsHilbert Space Banach Space Linear Subspace Closed Subspace Quotient Space
Unable to display preview. Download preview PDF.