From the reviews: "The two books together provide a predominantly self-contained presentation of the geometric theory of operator algebra state spaces, culminating in the classification theorem of Alfsen, Hanche-Olsen and Shultz. Until now much of this material has been accessible only in the original papers, which makes the two volumes a welcome addition to the literature... The result is a clear and comprehensive account... the book describes a beautiful solution to a problem dating back to the foundations of the subject." -MATHEMATICAL REVIEWS "Notable results...are presented in this book in a unified way, with complete and enlightening proofs and comments. The authors have done fine work for the mathematical community, providing a valuable toolkit for researchers interested in non-associative structures, self-adjoint operator algebras, or areas of functional analysis or mathematical physics where aspects related to convexity and ordered spaces appear..." -ZENTRALBLATT MATH "The aim of the present book is to give a complete geometric description of the state spaces of operator algebras, meaning to give axiomatic characterizations of those convex sets that are state spaces ... . The book is divided into three parts. ... It is aimed to specialists in operator algebras, graduate students and mathematicians working in other areas (mathematical physics, foundation of quantum mechanics)." (S. Cobzas, Mathematica, Vol. 46 (2), 2004) "The authors of this monograph present a complete and self-contained solution to the long-standing problem of giving a geometric description of state spaces ... . There also are an Appendix, a Bibliography containing 137 references, and an Index. The material, which previously has appeared only in research papers ... is made accessible here to a broad mathematical audience. ... The book under review is intended for specialists in operator algebras, as well as graduate students and mathematicians in other areas." (Radu Iordanescu, Revue Roumaine de Mathematiques Pures et Appliquees, Vol. XLIX (3), 2004)

• I: Jordan Algebras and Their State Spaces.- 1: JB-algebras.- 2: JBW-algebras.- 3: Structure of JBW-algebras.- 4: Representations of JB-algebras.- 5: State Spaces of Jordan Algebras.- 6: Dynamical Correspondences.- II: Convexity and Spectral Theory.- 7: General Compressions.- 8: Spectral Theory.- III: State Space Characterizations.- 9: Characterization of Jordan Algebra State Spaces.- 10: Characterization of Normal State Spaces of von Neumann Algebras.- 11: Characterization of C*-algebra State Spaces.

From the reviews: "The two books together provide a predominantly self-contained presentation of the geometric theory of operator algebra state spaces, culminating in the classification theorem of Alfsen, Hanche-Olsen and Shultz. Until now much of this material has been accessible only in the original papers, which makes the two volumes a welcome addition to the literature... The result is a clear and comprehensive account... the book describes a beautiful solution to a problem dating back to the foundations of the subject." -MATHEMATICAL REVIEWS "Notable results...are presented in this book in a unified way, with complete and enlightening proofs and comments. The authors have done fine work for the mathematical community, providing a valuable toolkit for researchers interested in non-associative structures, self-adjoint operator algebras, or areas of functional analysis or mathematical physics where aspects related to convexity and ordered spaces appear..." -ZENTRALBLATT MATH "The aim of the present book is to give a complete geometric description of the state spaces of operator algebras, meaning to give axiomatic characterizations of those convex sets that are state spaces ... . The book is divided into three parts. ... It is aimed to specialists in operator algebras, graduate students and mathematicians working in other areas (mathematical physics, foundation of quantum mechanics)." (S. Cobzas, Mathematica, Vol. 46 (2), 2004) "The authors of this monograph present a complete and self-contained solution to the long-standing problem of giving a geometric description of state spaces ... . There also are an Appendix, a Bibliography containing 137 references, and an Index. The material, which previously has appeared only in research papers ... is made accessible here to a broad mathematical audience. ... The book under review is intended for specialists in operator algebras, as well as graduate students and mathematicians in other areas." (Radu Iordanescu, Revue Roumaine de Mathematiques Pures et Appliquees, Vol. XLIX (3), 2004)

• I: Jordan Algebras and Their State Spaces.- 1: JB-algebras.- 2: JBW-algebras.- 3: Structure of JBW-algebras.- 4: Representations of JB-algebras.- 5: State Spaces of Jordan Algebras.- 6: Dynamical Correspondences.- II: Convexity and Spectral Theory.- 7: General Compressions.- 8: Spectral Theory.- III: State Space Characterizations.- 9: Characterization of Jordan Algebra State Spaces.- 10: Characterization of Normal State Spaces of von Neumann Algebras.- 11: Characterization of C*-algebra State Spaces.

From the reviews: "The two books together provide a predominantly self-contained presentation of the geometric theory of operator algebra state spaces, culminating in the classification theorem of Alfsen, Hanche-Olsen and Shultz. Until now much of this material has been accessible only in the original papers, which makes the two volumes a welcome addition to the literature... The result is a clear and comprehensive account... the book describes a beautiful solution to a problem dating back to the foundations of the subject." -MATHEMATICAL REVIEWS "Notable results...are presented in this book in a unified way, with complete and enlightening proofs and comments. The authors have done fine work for the mathematical community, providing a valuable toolkit for researchers interested in non-associative structures, self-adjoint operator algebras, or areas of functional analysis or mathematical physics where aspects related to convexity and ordered spaces appear..." -ZENTRALBLATT MATH "The aim of the present book is to give a complete geometric description of the state spaces of operator algebras, meaning to give axiomatic characterizations of those convex sets that are state spaces ... . The book is divided into three parts. ... It is aimed to specialists in operator algebras, graduate students and mathematicians working in other areas (mathematical physics, foundation of quantum mechanics)." (S. Cobzas, Mathematica, Vol. 46 (2), 2004) "The authors of this monograph present a complete and self-contained solution to the long-standing problem of giving a geometric description of state spaces ... . There also are an Appendix, a Bibliography containing 137 references, and an Index. The material, which previously has appeared only in research papers ... is made accessible here to a broad mathematical audience. ... The book under review is intended for specialists in operator algebras, as well as graduate students and mathematicians in other areas." (Radu Iordanescu, Revue Roumaine de Mathematiques Pures et Appliquees, Vol. XLIX (3), 2004)

• I: Jordan Algebras and Their State Spaces.- 1: JB-algebras.- 2: JBW-algebras.- 3: Structure of JBW-algebras.- 4: Representations of JB-algebras.- 5: State Spaces of Jordan Algebras.- 6: Dynamical Correspondences.- II: Convexity and Spectral Theory.- 7: General Compressions.- 8: Spectral Theory.- III: State Space Characterizations.- 9: Characterization of Jordan Algebra State Spaces.- 10: Characterization of Normal State Spaces of von Neumann Algebras.- 11: Characterization of C*-algebra State Spaces.