Elementary Algebraic Geometry pdf epub mobi txt 电子书 下载 2025

Cover 1
Title 4
Copyright 5
Contents 6
Preface 8
Chapter 0. Introduction 10
Exercises 24
Chapter 1. Affine Varieties 26
§1.1. Hilbert's Nullstellensatz 26
§1.2. Polynomial Functions and Maps 46
§1.3. Rational Functions and Maps 58
Exercises 67
Chapter 2. Projective Varieties 72
§2.1. Projective Space 72
§2.2. Projective Varieties 75
§2.3. Rational Functions and Morphisms 84
Exercises 103
Chapter 3. Smooth Points and Dimension 106
§3.1. Smooth and Singular Points 106
§3.2. Algebraic Characterization of the Dimension of a Variety 112
Exercises 121
Chapter 4. Plane Cubic Curves 124
§4.1. Plane Curves 124
§4.2. Intersection Multiplicity 127
§4.3. Classification of Smooth Cubics 135
§4.4. The Group Structure of an Elliptic Curve 145
Exercises 148
Chapter 5. Cubic Surfaces 152
§5.1. The Existence of Lines on a Cubic 153
§5.2. The Configuration of the 27 Lines 160
§5.3. Rationality of Cubics 170
Exercises 172
Chapter 6. Introduction to the Theory of Curves 176
§6.1. Divisors on Curves 176
§6.2. The Degree of a Principal Divisor 181
§6.3. Bezout's Theorem 191
§6.4. Linear Systems on Curves 193
§6.5. Projective Embeddings of Curves 202
Exercises 213
Bibliography 216
§A. Books on Commutative Algebra 216
§B. Books on Algebraic Geometry 216
§C. Other Literature 217
Index 220
A 220
B 220
C 220
D 220
E 220
F 220
G 221
H 221
I 221
J 221
K 221
L 221
M 221
N 221
O 221
P 221
Q 221
R 221
S 222
T 222
U 222
V 222
W 222
Z 222
Back Cover 225
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