Collected Works 1999; 639 pp; hardcover Volume: 12 ISBN10: 0821805428 ISBN13: 9780821805428 List Price: US$139 Member Price: US$111.20 Order Code: CWORKS/12
 The work of Joseph Fels Ritt and Ellis Kolchin in differential algebra paved the way for exciting new applications in constructive symbolic computation, differential Galois theory, the model theory of fields, and Diophantine geometry. This volume assembles Kolchin's mathematical papers, contributing solidly to the archive on construction of modern differential algebra. This collection of Kolchin's clear and comprehensive papersin themselves constituting a history of the subjectis an invaluable aid to the student of differential algebra. In 1910, Ritt created a theory of algebraic differential equations modeled not on the existing transcendental methods of Lie, but rather on the new algebra being developed by E. Noether and B. van der Waerden. Building on Ritt's foundation, and deeply influenced by Weil and Chevalley, Kolchin opened up Ritt theory to modern algebraic geometry. In so doing, he led differential geometry in a new direction. By creating differential algebraic geometry and the theory of differential algebraic groups, Kolchin provided the foundation for a "new geometry" that has led to both a striking and an original approach to arithmetic algebraic geometry. Intriguing possibilities were introduced for a new language for nonlinear differential equations theory. The volume includes commentary by A. Borel, M. Singer, and B. Poizat. Also Buium and Cassidy trace the development of Kolchin's ideas, from his important early work on the differential Galois theory to his later groundbreaking results on the theory of differential algebraic geometry and differential algebraic groups. Commentaries are selfcontained with numerous examples of various aspects of differential algebra and its applications. Central topics of Kolchin's work are discussed, presenting the history of differential algebra and exploring how his work grew from and transformed the work of Ritt. New directions of differential algebra are illustrated, outlining important current advances. Prerequisite to understanding the text is a background at the beginning graduate level in algebra, specifically commutative algebra, the theory of field extensions, and Galois theory. Readership Graduate students and research mathematicians working in differential algebra, symbolic computation, differential Galois theory, the model theory of fields, and arithmetic algebraic geometry. Reviews "This book reprints all the published research papers of Ellis Kolchin, as well as some nonarchival publications (such as distributed lecture notes), and publishes for the first time a short paper on Painlevé transcendents. "The volume also contains a nearly 130 page section of commentary, consisting of four expository articles. Taken together, these probably comprise the best introduction and survey of differential algebra currently available. The editors of this volume, and the authors of the articles in the Commentary section, are to be congratulated on not only making the publications of Ellis Kolchin readily available in a single volume format, but also for providing a set of excellent expository articles which will allow newcomers to the field to learn about the main themes in Kolchin's work in differential algebra and to see how those topics have developed mathematically up to the present day."  Zentralblatt MATH "With its relations to such varied fields as algebraic groups, transcendence, model theory, Diophantine geometry, partial differential equations and of course differential algebra itself, this book will be a welcome addition to all mathematical libraries."  Mathematical Reviews Table of Contents  PicardVessiot theory of partial differential fields
 The notion of dimension in the theory of algebraic differential equations
Part I. The Papers of Ellis Kolchin  On certain ideals of differential polynomials
 On the basis theorem for infinite systems of differential polynomials
 On the exponents of differential ideals
 On the basis theorem for differential systems
 Extensions of differential fields. I
 Extensions of differential fields. II
 Algebraic matric groups
 The PicardVessiot theory of homogeneous linear ordinary differential equations
 Extensions of differential fields. III
 Algebraic matric groups and the PicardVessiot theory of homogeneous linear ordinary differential equations
 On certain concepts in the theory of algebraic matric groups
 Existence theorems connected with the PicardVessiot theory of homogeneous linear ordinary differential equations
 Algebraic groups and differential equations
 Two proofs of a theorem on algebraic groups
 PicardVessiot theory of partial differential fields
 Galois theory of differential fields
 Differential fields and group varieties (First lecture)
 Differential fields and group varieties (Second lecture)
 On the Galois theory of differential fields
 Algebraic groups and the Galois theory of differential fields
 Rational approximation to the solutions of algebraic differential equations
 Existence of invariant bases
 Abelian extensions of differential fields
 Le théorème de la base finie pour les polynômes différentiels
 The notion of dimension in the theory of algebraic differential equations
 Singular solutions of algebraic differential equations and a lemma of Arnold Shapiro
 Some problems in differential algebra
 Algebraic groups and algebraic dependence
 Differential polynomials and strongly normal extensions
 Constrained extensions of differential fields
 Differential equations in a projective space and linear dependence over a projective variety
 Differential algebraic groups
 Differential algebraic structures
 On universal extensions of differential fields
 Differential algebraic groups
 A problem on differential polynomials
 Painlevé transcendent
Part II. Commentary  A. Borel  Algebraic groups and Galois theory in the work of Ellis R. Kolchin
 M. F. Singer  Direct and inverse problems in differential Galois theory
 B. Poizat  Les corps différentiellement clos, compagnons de route de la théorie des modèles
 A. Buium and P. J. Cassidy  Differential algebraic geometry and differential algebraic groups: From algebraic differential equation to Diophantine geometry
