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This book exposes the internal structure of non-self-adjoint operators acting on complex separable infinite dimensional
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The book concisely presents the fundamental aspects of the theory of operators on Hilbert spaces. The topics covered inc
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The spectral theorem of David Hilbert, John von Neumann, and Marshall Stone gives a complete answer to the question of w
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The great mathematician G. H. Hardy told us that "Beauty is the ?rst test: there is no permanent place in the world
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