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An introduction to algebraic geometrya computational approach /

Record Type:	Electronic resources : Monograph/item
Title/Author:	An introduction to algebraic geometryby Frank-Olaf Schreyer.
Reminder of title:	a computational approach /
Author:	Schreyer, Frank-Olaf.
Published:	Cham :Springer Nature Switzerland :2025.
Description:	xiii, 302 p. :ill., digital ;24 cm.
Contained By:	Springer Nature eBook
Subject:	Geometry, Algebraic.
Online resource:	https://doi.org/10.1007/978-3-031-84834-6
ISBN:	9783031848346$q(electronic bk.)

An introduction to algebraic geometrya computational approach /
Schreyer, Frank-Olaf.

An introduction to algebraic geometrya computational approach /[electronic resource] :by Frank-Olaf Schreyer. - Cham :Springer Nature Switzerland :2025. - xiii, 302 p. :ill., digital ;24 cm. - Universitext,2191-6675. - Universitext..

1. Hilbert's Nullstellensatz -- 2. The algebra-geometry dictionary -- 3. Noetherian rings and primary decomposition -- 4. Localization -- 5. Rational functions and dimension -- 6. Integral ring extensions and Krull dimension -- 7. Constructive ideal and module theory -- 8. Projective algebraic geometry -- 9. Bézout's theorem -- 10. Local rings and power series -- 11. Products and morphisms of projective varieties -- 12. Resolution of curve singularities -- 13. Families of varieties -- 14. Bertini's theorem and applications -- 15. The geometric genus of a plane curve -- 16. Riemann-Roch -- A. A glimpse of sheaves and cohomology -- B. Code for Macaulay2 computation -- References -- Glossary -- Index.

Algebraic Geometry is a huge area of mathematics which went through several phases: Hilbert's fundamental paper from 1890, sheaves and cohomology introduced by Serre in the 1950s, Grothendieck's theory of schemes in the 1960s and so on. This book covers the basic material known before Serre's introduction of sheaves to the subject with an emphasis on computational methods. In particular, we will use Gröbner basis systematically. The highlights are the Nullstellensatz, Gröbner basis, Hilbert's syzygy theorem and the Hilbert function, Bézout's theorem, semi-continuity of the fiber dimension, Bertini's theorem, Cremona resolution of plane curves and parametrization of rational curves. In the final chapter we discuss the proof of the Riemann-Roch theorem due to Brill and Noether, and give its basic applications.The algorithm to compute the Riemann-Roch space of a divisor on a curve, which has a plane model with only ordinary singularities, use adjoint systems. The proof of the completeness of adjoint systems becomes much more transparent if one use cohomology of coherent sheaves. Instead of giving the original proof of Max Noether, we explain in an appendix how this easily follows from standard facts on cohomology of coherent sheaves. The book aims at undergraduate students. It could be a course book for a first Algebraic Geometry lecture, and hopefully motivates further studies.

ISBN: 9783031848346$q(electronic bk.)

Standard No.: 10.1007/978-3-031-84834-6doiSubjects--Topical Terms:

190843
Geometry, Algebraic.

LC Class. No.: QA565

Dewey Class. No.: 516.35

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505 0 $a 1. Hilbert's Nullstellensatz -- 2. The algebra-geometry dictionary -- 3. Noetherian rings and primary decomposition -- 4. Localization -- 5. Rational functions and dimension -- 6. Integral ring extensions and Krull dimension -- 7. Constructive ideal and module theory -- 8. Projective algebraic geometry -- 9. Bézout's theorem -- 10. Local rings and power series -- 11. Products and morphisms of projective varieties -- 12. Resolution of curve singularities -- 13. Families of varieties -- 14. Bertini's theorem and applications -- 15. The geometric genus of a plane curve -- 16. Riemann-Roch -- A. A glimpse of sheaves and cohomology -- B. Code for Macaulay2 computation -- References -- Glossary -- Index.
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