Helgason, Sigurdur 1927
Overview
Works:  65 works in 311 publications in 2 languages and 5,852 library holdings 

Genres:  Conference papers and proceedings Case studies 
Roles:  Author, Honoree, Editor, Contributor 
Classifications:  QA3, 516.36 
Publication Timeline
.
Most widely held works by
Sigurdur Helgason
Differential geometry and symmetric spaces by
Sigurdur Helgason(
Book
)
80 editions published between 1962 and 2012 in 3 languages and held by 1,609 WorldCat member libraries worldwide
Although much has happened in the field since the publication of this book, this single volume on Riemannian geometry and for the analysis and geometry of symmetric spaces still offers a clear overview of the subjects
80 editions published between 1962 and 2012 in 3 languages and held by 1,609 WorldCat member libraries worldwide
Although much has happened in the field since the publication of this book, this single volume on Riemannian geometry and for the analysis and geometry of symmetric spaces still offers a clear overview of the subjects
The Radon transform by
Sigurdur Helgason(
Book
)
37 editions published between 1980 and 2014 in English and Russian and held by 713 WorldCat member libraries worldwide
This second edition, significantly expanded and updated, presents new material taking into account some of the progress made in the field since 1980"Jacket
37 editions published between 1980 and 2014 in English and Russian and held by 713 WorldCat member libraries worldwide
This second edition, significantly expanded and updated, presents new material taking into account some of the progress made in the field since 1980"Jacket
Geometric analysis on symmetric spaces by
Sigurdur Helgason(
Book
)
27 editions published between 1994 and 2008 in English and Undetermined and held by 583 WorldCat member libraries worldwide
"This book gives the first systematic exposition of geometric analysis on Riemannian symmetric spaces and its relationship to the representation theory of Lie groups. The book starts with modern integral geometry for double fibrations and treats several examples in detail. After discussing the theory of Radon transforms and Fourier transforms on symmetric spaces, inversion formulas, and range theorems, Helgason examines applications to invariant differential equations on symmetric spaces, existence theorems, and explicit solution formulas, particularly potential theory and wave equations. The canonical multitemporal wave equation on a symmetric space is included. The book concludes with a chapter on eigenspace representations  that is, representations on solution spaces of invariant differential equations."BOOK JACKET
27 editions published between 1994 and 2008 in English and Undetermined and held by 583 WorldCat member libraries worldwide
"This book gives the first systematic exposition of geometric analysis on Riemannian symmetric spaces and its relationship to the representation theory of Lie groups. The book starts with modern integral geometry for double fibrations and treats several examples in detail. After discussing the theory of Radon transforms and Fourier transforms on symmetric spaces, inversion formulas, and range theorems, Helgason examines applications to invariant differential equations on symmetric spaces, existence theorems, and explicit solution formulas, particularly potential theory and wave equations. The canonical multitemporal wave equation on a symmetric space is included. The book concludes with a chapter on eigenspace representations  that is, representations on solution spaces of invariant differential equations."BOOK JACKET
Groups and geometric analysis : integral geometry, invariant differential operators, and spherical functions by
Sigurdur Helgason(
Book
)
18 editions published in 1984 in English and held by 534 WorldCat member libraries worldwide
This volume, the second of Helgasonand#39;s three books on Lie groups and the geometry and analysis of symmetric spaces, is an introduction to grouptheoretic methods in analysis on spaces with a group action
18 editions published in 1984 in English and held by 534 WorldCat member libraries worldwide
This volume, the second of Helgasonand#39;s three books on Lie groups and the geometry and analysis of symmetric spaces, is an introduction to grouptheoretic methods in analysis on spaces with a group action
Topics in harmonic analysis on homogeneous spaces by
Sigurdur Helgason(
Book
)
13 editions published in 1981 in English and Undetermined and held by 357 WorldCat member libraries worldwide
13 editions published in 1981 in English and Undetermined and held by 357 WorldCat member libraries worldwide
Analysis on Lie groups and homogeneous spaces by
Sigurdur Helgason(
Book
)
24 editions published between 1972 and 2001 in English and held by 346 WorldCat member libraries worldwide
24 editions published between 1972 and 2001 in English and held by 346 WorldCat member libraries worldwide
Groups and geometric analysis : integral geometry, invariant differential operators, and spherical functions by
Sigurdur Helgason(
Book
)
11 editions published between 1984 and 2003 in English and held by 276 WorldCat member libraries worldwide
11 editions published between 1984 and 2003 in English and held by 276 WorldCat member libraries worldwide
Integral geometry and Radon transforms by
Sigurdur Helgason(
Book
)
15 editions published between 2010 and 2014 in English and held by 99 WorldCat member libraries worldwide
"In this text, integral geometry deals with Radon's problem of representing a function on a manifold in terms of its integrals over certain submanifolds hence the term the Radon transform...While containing some recent research, the book is aimed at beginning graduate students for classroom use or selfstudy. A number of exercises point to further results with documentation."  Back cover
15 editions published between 2010 and 2014 in English and held by 99 WorldCat member libraries worldwide
"In this text, integral geometry deals with Radon's problem of representing a function on a manifold in terms of its integrals over certain submanifolds hence the term the Radon transform...While containing some recent research, the book is aimed at beginning graduate students for classroom use or selfstudy. A number of exercises point to further results with documentation."  Back cover
Improving evaluation practices : best practice guidelines for evaluation and background paper by
Sigurdur Helgason(
Book
)
4 editions published in 1999 in English and held by 96 WorldCat member libraries worldwide
4 editions published in 1999 in English and held by 96 WorldCat member libraries worldwide
The selected works of Sigurur Helgason by
Sigurdur Helgason(
Book
)
6 editions published in 2009 in English and held by 87 WorldCat member libraries worldwide
6 editions published in 2009 in English and held by 87 WorldCat member libraries worldwide
Global differential geometry and global analysis 1984 : proceedings of a conference held in Berlin, June 1014, 1984 by
D Ferus(
)
4 editions published in 1985 in English and held by 37 WorldCat member libraries worldwide
4 editions published in 1985 in English and held by 37 WorldCat member libraries worldwide
Integral Geometry, Radon Transforms and Complex Analysis Lectures given at the 1st Session of the Centro Internazionale Matematico
Estivo (C.I.M.E.) held in Venice, Italy, June 312, 1996 by
Carlos A Berenstein(
)
5 editions published in 1998 in English and held by 34 WorldCat member libraries worldwide
This book contains the notes of five short courses delivered at the "Centro Internazionale Matematico Estivo" session "Integral Geometry, Radon Transforms and Complex Analysis" held in Venice (Italy) in June 1996: three of them deal with various aspects of integral geometry, with a common emphasis on several kinds of Radon transforms, their properties and applications, the other two share a stress on CR manifolds and related problems. All lectures are accessible to a wide audience, and provide selfcontained introductions and short surveys on the subjects, as well as detailed expositions of selected results
5 editions published in 1998 in English and held by 34 WorldCat member libraries worldwide
This book contains the notes of five short courses delivered at the "Centro Internazionale Matematico Estivo" session "Integral Geometry, Radon Transforms and Complex Analysis" held in Venice (Italy) in June 1996: three of them deal with various aspects of integral geometry, with a common emphasis on several kinds of Radon transforms, their properties and applications, the other two share a stress on CR manifolds and related problems. All lectures are accessible to a wide audience, and provide selfcontained introductions and short surveys on the subjects, as well as detailed expositions of selected results
In search of results : performance management practices(
Book
)
1 edition published in 1998 in English and held by 8 WorldCat member libraries worldwide
1 edition published in 1998 in English and held by 8 WorldCat member libraries worldwide
Gruppy i geometricheskiĭ analiz : integralʹnai︠a︡ geometrii︠a︡, invariantnye different︠s︡ialʹnye operatory i sfericheskie
funkt︠s︡ii by
Sigurdur Helgason(
Book
)
6 editions published in 1987 in Russian and English and held by 6 WorldCat member libraries worldwide
6 editions published in 1987 in Russian and English and held by 6 WorldCat member libraries worldwide
Geometric analysis and integral geometry : AMS Special session on Radon Transforms and Geometric Analysis in honor of Sigurdur
Helgason's 85th birthday, January 4  7, 2012, Boston, MA; Tufts University Workshop on Geometric Analysis on Euclidean and
Homogeneous Spaces, January 8  9, 2012, Medford, MA by AMS Special Session on Radon Transforms and Geometric Analysis(
Book
)
2 editions published in 2013 in English and held by 5 WorldCat member libraries worldwide
2 editions published in 2013 in English and held by 5 WorldCat member libraries worldwide
Analytic properties of automorphic Lfunctions by
Stephen S Gelbart(
)
1 edition published in 2014 in English and held by 0 WorldCat member libraries worldwide
Analytic Properties of Automorphic LFunctions
1 edition published in 2014 in English and held by 0 WorldCat member libraries worldwide
Analytic Properties of Automorphic LFunctions
Representation Theory of Lie Groups by
Michael Francis Atiyah(
)
2 editions published in 1980 in English and held by 0 WorldCat member libraries worldwide
In 1977 a symposium was held in Oxford to introduce Lie groups and their representations to nonspecialists
2 editions published in 1980 in English and held by 0 WorldCat member libraries worldwide
In 1977 a symposium was held in Oxford to introduce Lie groups and their representations to nonspecialists
Groups & amp; Geometric Analysis Integrated geometry, incariant differential operators, and spherical functions by
Sigurdur Helgason(
)
1 edition published in 1984 in English and held by 0 WorldCat member libraries worldwide
Groups & amp; Geometric Analysis
1 edition published in 1984 in English and held by 0 WorldCat member libraries worldwide
Groups & amp; Geometric Analysis
Causal symmetric spaces by
Gestur lafsson(
)
1 edition published in 1996 in English and held by 0 WorldCat member libraries worldwide
This book is intended to introduce researchers and graduate students to the concepts of causal symmetric spaces. To date, results of recent studies considered standard by specialists have not been widely published. This book seeks to bring this information to students and researchers in geometry and analysis on causal symmetric spaces
1 edition published in 1996 in English and held by 0 WorldCat member libraries worldwide
This book is intended to introduce researchers and graduate students to the concepts of causal symmetric spaces. To date, results of recent studies considered standard by specialists have not been widely published. This book seeks to bring this information to students and researchers in geometry and analysis on causal symmetric spaces
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Related Identities
 Conference Board of the Mathematical Sciences
 AlaHarja, Marjukka
 Organisation for Economic Cooperation and Development Public Management Service
 Organisation for Economic Cooperation and Development Public Management Committee
 Ólafsson, Gestur Author Editor
 Schlichtkrull, Henrik 1954 Editor
 Ferus, Dirk Author Editor
 Simon, Udo
 Coates, J. Author
 Berenstein, Carlos A. Author
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Associated Subjects
Administrative agenciesEvaluation Algebra Automorphic functions Canada Differential equations Evaluation Executive departmentsEvaluation Functions of complex variables Geometric analysis Geometry, Differential Geometry, Riemannian Global analysis (Mathematics) Global differential geometry Government productivity Government productivityEvaluation Harmonic analysis Homogeneous spaces Integral geometry Integral transforms Lfunctions Lie groups Mathematical analysis Mathematics OECD countries Performance standards Policy sciences Public administrationEvaluation Radon transforms Representations of Lie groups Riemannian manifolds Scientists Symmetric spaces Topological groups Total quality management in government United States
Alternative Names
Chelgason, S. 1927
Chelgason, Sigurdur 1927
Helgason, S.
Helgason, Sigurur
Helgason, Sigurdur 1927
Khelgason, S. 1927
Sigurur Helgason 1927
Sigurdur Helgason Icelandic mathematician
Сигурдур Хелгасон исландскоамериканский математик
Хелгасон, С 1927
Хелгасон, С. (Сигурдур), 1927
Хелгасон, Сигурдур.
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