Topics in Operator Theory: Constantin Apostol Memorial Issue (Operator Theory: Advances and Applications)

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Contributions to Operator Theory and its Applications Proceedings of the Conference on Operator Theory and Functional Analysis, Mesa, Arizona, June 11–14, 1987

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Spectral Theory

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Introduction to Optimization Theory in a Hilbert Space

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Operatorenrechnung: Mit Anwendungen auf Technische Probleme (German Edition)

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Boundary Value Problems of Mathematical Physics and Related Aspects of Function Theory (Seminars in mathematics)

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Topics in Operator Theory Volume 2: Systems and Mathematical Physics

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Tulane University Ring and Operator Theory Year, 1970-1971: Vol. 2: Lectures on Operator Algebras (Lecture Notes in Mathematics, 247)