En savoir plus
Paul Richard Halmos, who lived a life of unbounded devotion to mathematics and to the mathematical community, died at the age of 90 on October 2, 2006. This volume is a memorial to Paul by operator theorists he inspired. Paul'sinitial research,beginning with his 1938Ph.D. thesis at the University of Illinois under Joseph Doob, was in probability, ergodic theory, and measure theory. A shift occurred in the 1950s when Paul's interest in foundations led him to invent a subject he termed algebraic logic, resulting in a succession of papers on that subject appearing between 1954 and 1961, and the book Algebraic Logic, published in 1962. Paul's ?rst two papers in pure operator theory appeared in 1950. After 1960 Paul's research focused on Hilbert space operators, a subject he viewed as enc- passing ?nite-dimensional linear algebra. Beyond his research, Paul contributed to mathematics and to its community in manifold ways: as a renowned expositor, as an innovative teacher, as a tireless editor, and through unstinting service to the American Mathematical Society and to the Mathematical Association of America. Much of Paul's in?uence ?owed at a personal level. Paul had a genuine, uncalculating interest in people; he developed an enormous number of friendships over the years, both with mathematicians and with nonmathematicians. Many of his mathematical friends, including the editors ofthisvolume,whileabsorbingabundantquantitiesofmathematicsatPaul'sknee, learned from his advice and his example what it means to be a mathematician.
Table des matières
Paul Halmos.- Paul Halmos - Expositor Par Excellence.- Paul Halmos: In His Own Words.- Obituary: Paul Halmos, 1916-2006.- Mathematical Review of "How to Write Mathematics" by P.R. Halrnos.- Publications of Paul R. Halmos.- Photos.- Articles.- What Can Hilbert Spaces Tell Us About Bounded Functions in the Bidisk?.- Dilation Theory Yesterday and Today.- Toeplitz Operators.- Dual Algebras and Invariant Subspaces.- The State of Subnormal Operators.- Polynomially Hyponormal Operators.- Essentially Normal Operators.- The Operator Fejér-Riesz Theorem.- A Halmos Doctrine and Shifts on Hilbert Space.- The Behavior of Functions of Operators Under Perturbations.- The Halmos Similarity Problem.- Paul Halmos and Invariant Subspaces.- Commutant Lifting.- Double Cones are Intervals.
A propos de l'auteur
Sheldon Axler is Dean of the College of Science & Engineering at San Francisco State University. He has authored many well-received books.
Résumé
Paul Richard Halmos, who lived a life of unbounded devotion to mathematics and to the mathematical community, died at the age of 90 on October 2, 2006. This volume is a memorial to Paul by operator theorists he inspired. Paul’sinitial research,beginning with his 1938Ph.D. thesis at the University of Illinois under Joseph Doob, was in probability, ergodic theory, and measure theory. A shift occurred in the 1950s when Paul’s interest in foundations led him to invent a subject he termed algebraic logic, resulting in a succession of papers on that subject appearing between 1954 and 1961, and the book Algebraic Logic, published in 1962. Paul’s ?rst two papers in pure operator theory appeared in 1950. After 1960 Paul’s research focused on Hilbert space operators, a subject he viewed as enc- passing ?nite-dimensional linear algebra. Beyond his research, Paul contributed to mathematics and to its community in manifold ways: as a renowned expositor, as an innovative teacher, as a tireless editor, and through unstinting service to the American Mathematical Society and to the Mathematical Association of America. Much of Paul’s in?uence ?owed at a personal level. Paul had a genuine, uncalculating interest in people; he developed an enormous number of friendships over the years, both with mathematicians and with nonmathematicians. Many of his mathematical friends, including the editors ofthisvolume,whileabsorbingabundantquantitiesofmathematicsatPaul’sknee, learned from his advice and his example what it means to be a mathematician.
Texte suppl.
From the reviews:
“This is a book about the legacy of Paul Halmos in Operator Theory … . if you want to delve deeper into the research topic that was central to his career, this book is an excellent place to start. Any researcher starting out in Operator Theory, Operator Algebras or a related area would also be well-advised to read this volume. It gives an excellent portrayal the sweep of history in a mathematical discipline and how it can be affected by one man.” (Gordon MacDonald, The Mathematical Association of America, October, 2010)
Commentaire
From the reviews:
"This is a book about the legacy of Paul Halmos in Operator Theory ... . if you want to delve deeper into the research topic that was central to his career, this book is an excellent place to start. Any researcher starting out in Operator Theory, Operator Algebras or a related area would also be well-advised to read this volume. It gives an excellent portrayal the sweep of history in a mathematical discipline and how it can be affected by one man." (Gordon MacDonald, The Mathematical Association of America, October, 2010)
