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Superconcentration and Related Topics
Taschenbuch von Sourav Chatterjee
Sprache: Englisch

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Beschreibung
A certain curious feature of random objects, introduced by the author as ¿super concentration,¿ and two related topics, ¿chaos¿ and ¿multiple valleys,¿ are highlighted in this book. Although super concentration has established itself as a recognized feature in a number of areas of probability theory in the last twenty years (under a variety of names), the author was the first to discover and explore its connections with chaos and multiple valleys. He achieves a substantial degree of simplification and clarity in the presentation of these findings by using the spectral approach.
Understanding the fluctuations of random objects is one of the major goals of probability theory and a whole subfield of probability and analysis, called concentration of measure, is devoted to understanding these fluctuations. This subfield offers a range of tools for computing upper bounds on the orders of fluctuations of very complicated random variables. Usually, concentration of measure is useful when more direct problem-specific approaches fail; as a result, it has massively gained acceptance over the last forty years. And yet, there is a large class of problems in which classical concentration of measure produces suboptimal bounds on the order of fluctuations. Here lies the substantial contribution of this book, which developed from a set of six lectures the author first held at the Cornell Probability Summer School in July 2012.
The book is interspersed with a sizable number of open problems for professional mathematicians as well as exercises for graduate students working in the fields of probability theory and mathematical physics. The material is accessible to anyone who has attended a graduate course in probability.
A certain curious feature of random objects, introduced by the author as ¿super concentration,¿ and two related topics, ¿chaos¿ and ¿multiple valleys,¿ are highlighted in this book. Although super concentration has established itself as a recognized feature in a number of areas of probability theory in the last twenty years (under a variety of names), the author was the first to discover and explore its connections with chaos and multiple valleys. He achieves a substantial degree of simplification and clarity in the presentation of these findings by using the spectral approach.
Understanding the fluctuations of random objects is one of the major goals of probability theory and a whole subfield of probability and analysis, called concentration of measure, is devoted to understanding these fluctuations. This subfield offers a range of tools for computing upper bounds on the orders of fluctuations of very complicated random variables. Usually, concentration of measure is useful when more direct problem-specific approaches fail; as a result, it has massively gained acceptance over the last forty years. And yet, there is a large class of problems in which classical concentration of measure produces suboptimal bounds on the order of fluctuations. Here lies the substantial contribution of this book, which developed from a set of six lectures the author first held at the Cornell Probability Summer School in July 2012.
The book is interspersed with a sizable number of open problems for professional mathematicians as well as exercises for graduate students working in the fields of probability theory and mathematical physics. The material is accessible to anyone who has attended a graduate course in probability.
Über den Autor
Sourav Chatterjee is a Professor of Statistics and Mathematics at Stanford University. He has previously taught at the University of California at Berkeley and at the Courant Institute of Mathematical Sciences. He has won several international awards for his work in probability theory, including the Rollo Davidson Prize (2010), the Doeblin Prize (2012) and the Loève Prize (2013) and has received the invitation to speak at the International Congress of Mathematicians in 2014.
Zusammenfassung

First book devoted to the topic of super concentration, chaos and multiple valleys

Presents a wide array of examples on the subject

Integrates new concepts and gives a systematic account of the history and development of the features of random objects

Includes supplementary material: [...]

Inhaltsverzeichnis

Preface.- 1.Introduction.- 2.Markov semigroups.- 3.Super concentration and chaos.- 4.Multiple valleys.- 5.Talagrand's method for proving super concentration.- 6.The spectral method for proving super concentration.- 7.Independent flips.- 8.Extremal fields.- 9.Further applications of hypercontractivity.- 10.The interpolation method for proving chaos.- 11.Variance lower bounds.- 12.Dimensions of level sets.- Appendix A. Gaussian random variables.- Appendix B. Hypercontractivity.- Bibliography.- Indices.

Details
Erscheinungsjahr: 2016
Fachbereich: Wahrscheinlichkeitstheorie
Genre: Mathematik
Rubrik: Naturwissenschaften & Technik
Medium: Taschenbuch
Seiten: 168
Reihe: Springer Monographs in Mathematics
Inhalt: ix
156 S.
ISBN-13: 9783319352282
ISBN-10: 3319352288
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Autor: Chatterjee, Sourav
Auflage: Softcover reprint of the original 1st ed. 2014
Hersteller: Springer International Publishing
Springer International Publishing AG
Springer Monographs in Mathematics
Maße: 235 x 155 x 10 mm
Von/Mit: Sourav Chatterjee
Erscheinungsdatum: 23.08.2016
Gewicht: 0,265 kg
Artikel-ID: 103493537
Über den Autor
Sourav Chatterjee is a Professor of Statistics and Mathematics at Stanford University. He has previously taught at the University of California at Berkeley and at the Courant Institute of Mathematical Sciences. He has won several international awards for his work in probability theory, including the Rollo Davidson Prize (2010), the Doeblin Prize (2012) and the Loève Prize (2013) and has received the invitation to speak at the International Congress of Mathematicians in 2014.
Zusammenfassung

First book devoted to the topic of super concentration, chaos and multiple valleys

Presents a wide array of examples on the subject

Integrates new concepts and gives a systematic account of the history and development of the features of random objects

Includes supplementary material: [...]

Inhaltsverzeichnis

Preface.- 1.Introduction.- 2.Markov semigroups.- 3.Super concentration and chaos.- 4.Multiple valleys.- 5.Talagrand's method for proving super concentration.- 6.The spectral method for proving super concentration.- 7.Independent flips.- 8.Extremal fields.- 9.Further applications of hypercontractivity.- 10.The interpolation method for proving chaos.- 11.Variance lower bounds.- 12.Dimensions of level sets.- Appendix A. Gaussian random variables.- Appendix B. Hypercontractivity.- Bibliography.- Indices.

Details
Erscheinungsjahr: 2016
Fachbereich: Wahrscheinlichkeitstheorie
Genre: Mathematik
Rubrik: Naturwissenschaften & Technik
Medium: Taschenbuch
Seiten: 168
Reihe: Springer Monographs in Mathematics
Inhalt: ix
156 S.
ISBN-13: 9783319352282
ISBN-10: 3319352288
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Autor: Chatterjee, Sourav
Auflage: Softcover reprint of the original 1st ed. 2014
Hersteller: Springer International Publishing
Springer International Publishing AG
Springer Monographs in Mathematics
Maße: 235 x 155 x 10 mm
Von/Mit: Sourav Chatterjee
Erscheinungsdatum: 23.08.2016
Gewicht: 0,265 kg
Artikel-ID: 103493537
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