Notes on noncommutative LP and Orlicz spaces

Since the pioneering work of Dixmier and Segal in the early 50’s, the theory of noncommutative LP-spaces has grown into a very refined and important theory with wide applications. Despite this fact there is as yet no self-contained peer-reviewed introduction to the most general version of this theor...

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المؤلفون الرئيسيون: Goldstein, Stanisław, Labuschagne, Louis
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اللغة:الإنجليزية
منشور في: Wydawnictwo Uniwersytetu Łódzkiego 2025
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الوصول للمادة أونلاين:ONIX_20250307_9788382203868_440
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author Goldstein, Stanisław
Labuschagne, Louis
author_browse Goldstein, Stanisław
Labuschagne, Louis
author_facet Goldstein, Stanisław
Labuschagne, Louis
author_sort Goldstein, Stanisław
collection Directory of Open Access Books
description Since the pioneering work of Dixmier and Segal in the early 50’s, the theory of noncommutative LP-spaces has grown into a very refined and important theory with wide applications. Despite this fact there is as yet no self-contained peer-reviewed introduction to the most general version of this theory in print. The present work aims to fill this vacuum, in the process giving fresh impetus to the theory. The first part of the book presents: the introductory theory of von Neumann algebras – also including the slightly less common theory of generalized positive operators; the various notions of measurability, allowing the interpretation of unbounded affiliated operators as “quantum”" measurable functions, with the crucial notion of τ-measurability developed in more detail; Jordan *-morphisms (representing quantum measurable transformations) that behave well with regard to τ-measurability; and finally the different types of weights that occur naturally in the theory, before presenting a Radon-Nikodym theorem for such weights. The core, second part of the book is devoted to first developing the noncommutative theory of decreasing rearrangements, before using that technology to present the basic theory of LP and Orlicz spaces for semifinite algebras, and then the notion of crossed product, as well as the technology underlying it, indispensable for the theory of Haagerup LP-spaces for general von Neumann algebras. With this as a foundation, we are then finally ready to present the basic structural theory of not only Haagerup LP-spaces, but also Orlicz spaces for general von Neumann algebras.
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spelling doab-20.500.12854ir-1542612025-03-07T12:50:05Z Notes on noncommutative LP and Orlicz spaces Goldstein, Stanisław Labuschagne, Louis Lp-spaces Noncommutative measure theory Orlicz spaces Von Neumann algebras Since the pioneering work of Dixmier and Segal in the early 50’s, the theory of noncommutative LP-spaces has grown into a very refined and important theory with wide applications. Despite this fact there is as yet no self-contained peer-reviewed introduction to the most general version of this theory in print. The present work aims to fill this vacuum, in the process giving fresh impetus to the theory. The first part of the book presents: the introductory theory of von Neumann algebras – also including the slightly less common theory of generalized positive operators; the various notions of measurability, allowing the interpretation of unbounded affiliated operators as “quantum”" measurable functions, with the crucial notion of τ-measurability developed in more detail; Jordan *-morphisms (representing quantum measurable transformations) that behave well with regard to τ-measurability; and finally the different types of weights that occur naturally in the theory, before presenting a Radon-Nikodym theorem for such weights. The core, second part of the book is devoted to first developing the noncommutative theory of decreasing rearrangements, before using that technology to present the basic theory of LP and Orlicz spaces for semifinite algebras, and then the notion of crossed product, as well as the technology underlying it, indispensable for the theory of Haagerup LP-spaces for general von Neumann algebras. With this as a foundation, we are then finally ready to present the basic structural theory of not only Haagerup LP-spaces, but also Orlicz spaces for general von Neumann algebras. 2025-03-07T12:50:04Z 2025-03-07T12:50:04Z 2020 book ONIX_20250307_9788382203868_440 9788382203868 9788382203851 https://directory.doabooks.org/handle/20.500.12854/154261 eng image/jpeg Attribution-NonCommercial-NoDerivatives 4.0 International https://www.press.uni.lodz.pl/index.php/wul/catalog/book/800 Wydawnictwo Uniwersytetu Łódzkiego electronic 10.18778/8220-385-1 10.18778/8220-385-1 83bfe9c9-323d-4283-b087-d859fd9af314 9788382203868 9788382203851 electronic open access
spellingShingle Lp-spaces
Noncommutative measure theory
Orlicz spaces
Von Neumann algebras
Goldstein, Stanisław
Labuschagne, Louis
Notes on noncommutative LP and Orlicz spaces
title Notes on noncommutative LP and Orlicz spaces
title_full Notes on noncommutative LP and Orlicz spaces
title_fullStr Notes on noncommutative LP and Orlicz spaces
title_full_unstemmed Notes on noncommutative LP and Orlicz spaces
title_short Notes on noncommutative LP and Orlicz spaces
title_sort notes on noncommutative lp and orlicz spaces
topic Lp-spaces
Noncommutative measure theory
Orlicz spaces
Von Neumann algebras
topic_facet Lp-spaces
Noncommutative measure theory
Orlicz spaces
Von Neumann algebras
url ONIX_20250307_9788382203868_440
work_keys_str_mv AT goldsteinstanisław notesonnoncommutativelpandorliczspaces
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