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Algebraic functions and projective curves 1st Edition by David Goldschmidt ISBN 0387954325 9780387954325

  • SKU: BELL-2043424
Algebraic functions and projective curves 1st Edition by David Goldschmidt ISBN 0387954325 9780387954325
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Algebraic functions and projective curves 1st Edition by David Goldschmidt ISBN 0387954325 9780387954325 instant download after payment.

Publisher: Springer
File Extension: PDF
File size: 1.05 MB
Pages: 195
Author: Goldschmidt D.
ISBN: 9780387954325, 0387954325
Language: English
Year: 2003

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Algebraic functions and projective curves 1st Edition by David Goldschmidt ISBN 0387954325 9780387954325 by Goldschmidt D. 9780387954325, 0387954325 instant download after payment.

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ISBN 10: 0387954325 
ISBN 13: 9780387954325
Author: David Goldschmidt

This book grew out of a set of notes for a series of lectures I orginally gave at the Center for Communications Research and then at Princeton University. The motivation was to try to understand the basic facts about algebraic curves without the modern prerequisite machinery of algebraic geometry. Of course, one might well ask if this is a good thing to do. There is no clear answer to this question. In short, we are trading off easier access to the facts against a loss of generality and an impaired understanding of some fundamental ideas. Whether or not this is a useful tradeoff is something you will have to decide for yourself. One of my objectives was to make the exposition as self-contained as possible. Given the choice between a reference and a proof, I usually chose the latter. - though I worked out many of these arguments myself, I think I can con?dently predict that few, if any, of them are novel. I also made an effort to cover some topics that seem to have been somewhat neglected in the expository literature.

Algebraic functions and projective curves 1st Table of contents:

Part I: Algebraic Foundations and Affine Curves

  • Chapter 1: Rings, Fields, and Polynomials
    • Basic Ring Theory: Ideals, Prime and Maximal Ideals
    • Field Extensions: Algebraic and Transcendental Extensions
    • Polynomial Rings: Factorization and Irreducibility
    • Resultants and Elimination Theory (Introduction)
  • Chapter 2: Affine Algebraic Varieties
    • Affine Space An(k)
    • Affine Varieties: Zeros of Polynomial Ideals
    • The Zariski Topology
    • Irreducible Varieties and Prime Ideals
    • The Nullstellensatz: Bridging Algebra and Geometry
    • Coordinate Rings and Isomorphisms of Varieties
  • Chapter 3: Affine Plane Curves
    • Definition and Basic Properties
    • Intersections of Affine Curves (Bézout's Theorem for Affine Curves)
    • Tangent Lines and Singular Points
    • Rational Parametrizations

Part II: Projective Space and Projective Curves

  • Chapter 4: Projective Space
    • Construction of Projective Space Pn(k)
    • Homogeneous Coordinates
    • Affine Patches and Homogenization/Dehomogenization
    • Projective Varieties and Ideals
    • The Projective Nullstellensatz
  • Chapter 5: Projective Curves: Basic Theory
    • Definition and Properties of Projective Curves
    • Irreducible Components
    • Intersections of Projective Curves: Bézout's Theorem (Full Version)
    • Tangent Lines and Singular Points on Projective Curves
  • Chapter 6: Rational Maps and Birational Equivalence
    • Regular Functions and Rational Functions on Varieties
    • Rational Maps and Morphisms
    • Birational Equivalence: Isomorphism in the World of Rational Maps
    • Blow-ups and Resolution of Singularities (Introduction)

Part III: Algebraic Function Fields and Riemann Surfaces

  • Chapter 7: Algebraic Function Fields of One Variable
    • Definition and Properties of Function Fields
    • Valuations and Places
    • Discrete Valuation Rings and Local Rings of Curves
    • Relationship between Places and Points on Curves
  • Chapter 8: Introduction to Riemann Surfaces
    • Complex Curves and Projective Curves over C
    • Topology of Riemann Surfaces
    • Meromorphic Functions on Riemann Surfaces
    • The Fundamental Connection: Non-Singular Projective Curves and Compact Riemann Surfaces

Part IV: Divisors, Differentials, and the Riemann-Roch Theorem

  • Chapter 9: Divisors on Curves
    • Definition of Divisors: Formal Sums of Points
    • Degree of a Divisor
    • Principal Divisors and Linear Equivalence
    • The Group of Divisors and the Picard Group
  • Chapter 10: Differentials on Curves
    • Kähler Differentials
    • Canonical Divisor and the Space of Global Differentials
    • Meromorphic Differentials
  • Chapter 11: The Riemann-Roch Theorem
    • Statement and Significance of the Theorem
    • Vector Spaces Associated with Divisors (L(D))
    • The Genus of a Curve
    • Applications of Riemann-Roch: Weierstrass Gap Theorem, Embeddings

Part V: Further Topics and Special Curves

  • Chapter 12: Elliptic Curves
    • Weierstrass Normal Form
    • The Group Law on Elliptic Curves
    • Torsion Points
    • Applications of Elliptic Curves (Cryptography, Number Theory)
  • Chapter 13: Hyperelliptic Curves
    • Definition and Basic Properties
    • The Weierstrass Points
    • Jacobian of a Curve (Brief Introduction)
  • Chapter 14: Linear Systems
    • Definition and Properties of Linear Systems
    • Complete Linear Systems
    • Maps Defined by Linear Systems
    • Embeddings of Curves into Projective Space

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