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AuthorCox, David. author
TitleIdeals, Varieties, and Algorithms [electronic resource] : An Introduction to Computational Algebraic Geometry and Commutative Algebra / by David Cox, John Little, Donal O'Shea
ImprintNew York, NY : Springer New York : Imprint: Springer, 1997
Edition Second Edition
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Descript XIII, 538 p. 44 illus. online resource


Algebraic Geometry is the study of systems of polynomial equations in one or more variables, asking such questions as: Does the system have finitely many solutions, and if so how can one find them? And if there are infinitely many solutions, how can they be described and manipulated? The solutions of a system of polynomial equations form a geometric object called a variety; the corresponding algebraic object is an ideal. There is a close relationship between ideals and varieties which reveals the intimate link between algebra and geometry. Written at a level appropriate to undergraduates, this book covers such topics as the Hilbert Basis Theorem, the Nullstellensatz, invariant theory, projective geometry, and dimension theory. The algorithms to answer questions such as those posed above are an important part of algebraic geometry. This book bases its discussion of algorithms on a generalization of the division algorithm for polynomials in one variable that was only discovered in the 1960's. Although the algorithmic roots of algebraic geometry are old, the computational aspects were neglected earlier in this century. This has changed in recent years, and new algorithms, coupled with the power of fast computers, have let to some interesting applications, for example in robotics and in geometric theorem proving. In preparing a new edition of Ideals, Varieties and Algorithms the authors present an improved proof of the Buchberger Criterion as well as a proof of Bezout's Theorem. Appendix C contains a new section on Axiom and an update about Maple , Mathematica and REDUCE


1. Geometry, Algebra, and Algorithms -- 2. Groebner Bases -- 3. Elimination Theory -- 4. The Algebra-Geometry Dictionary -- 5. Polynomial and Rational Functions on a Variety -- 6. Robotics and Automatic Geometric Theorem Proving -- 7. Invariant Theory of Finite Groups -- 8. Projective Algebraic Geometry -- 9. The Dimension of a Variety -- Appendix A. Some Concepts from Algebra -- ยง1 Fields and Rings -- ยง2. Groups -- ยง3. Determinants -- Appendix B. Pseudocode -- ยง1. Inputs, Outputs, Variables, and Constants -- ยง2. Assignment Statements -- ยง3. Looping Structures -- ยง4. Branching Structures -- Appendix C. Computer Algebra Systems -- ยง1. AXIOM -- ยง2. Maple -- ยง3. Mathematica -- ยง4. REDUCE -- ยง5. Other Systems -- Appendix D. Independent Projects -- ยง1. General Comments -- ยง2. Suggested Projects -- References

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