I. Algebraic Varieties in a Projective Space.- I. Fundamental Concepts.- � 1. Plane Algebraic Curves.- 1. Rational Curves.- 2. Connections with the Theory of Fields.- 3. Birational Isomorphism of Curves.- Exercises.- �2. Closed Subsets of Affine Spaces.- 1. Definition of Closed Subset.- 2. Regular Functions on a Closed Set.- 3. Regular Mappings.- Exercises.- � 3. Rational Functions.- 1. Irreducible Sets.- 2. Rational Functions.- 3. Rational Mappings.- Exercises.- � 4. Quasiprojective Varieties.- 1. Closed Subsets of ...
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I. Algebraic Varieties in a Projective Space.- I. Fundamental Concepts.- � 1. Plane Algebraic Curves.- 1. Rational Curves.- 2. Connections with the Theory of Fields.- 3. Birational Isomorphism of Curves.- Exercises.- �2. Closed Subsets of Affine Spaces.- 1. Definition of Closed Subset.- 2. Regular Functions on a Closed Set.- 3. Regular Mappings.- Exercises.- � 3. Rational Functions.- 1. Irreducible Sets.- 2. Rational Functions.- 3. Rational Mappings.- Exercises.- � 4. Quasiprojective Varieties.- 1. Closed Subsets of a Projective Space.- 2. Regular Functions.- 3. Rational Functions.- 4. Examples of Regular Mappings.- Exercises.- � 5. Products and Mappings of Quasiprojective Varieties.- 1. Products.- 2. Closure of the Image of a Projective Variety.- 3. Finite Mappings.- 4. Normalization Theorem.- Exercises.- � 6. Dimension.- 1. Definition of Dimension.- 2. Dimension of an Intersection with a Hypersurface.- 3. A Theorem on the Dimension of Fibres.- 4. Lines on Surfaces.- 5. The Chow Coordinates of a Projective Variety.- Exercises.- II. Local Properties.- �1. Simple and Singular Points.- 1. The Local Ring of a Point.- 2. The Tangent Space.- 3. Invariance of the Tangent Space.- 4. Singular Points.- 5. The Tangent Cone.- Exercises.- �2. Expansion in Power Series.- 1. Local Parameters at a Point.- 2. Expansion in Power Series.- 3. Varieties over the Field of Real and the Field of Complex Numbers 88 Exercises.- � 3. Properties of Simple Points.- 1. Subvarieties of Codimension 1.- 2. Smooth Subvarieties.- 3. Factorization in the Local Ring of a Simple Point.- Exercises.- � 4. The Structure of Birational Isomorphisms.- 1. The ?-Process in a Projective Space.- 2. The Local ?-Process.- 3. Behaviour of Subvarieties under a ?-Process.- 4. Exceptional Subvarieties.- 5. Isomorphism and Birational Isomorphism.- Exercises.- �5. Normal Varieties.- 1. Normality.- 2. Normalization of Affine Varieties.- 3. Ramification.- 4. Normalization of Curves.- 5. Projective Embeddings of Smooth Varieties.- Exercises.- III. Divisors and Differential Forms.- � 1. Divisors.- 1. Divisor of a Function.- 2. Locally Principal Divisors.- 3. How to Shift the Support of a Divisor Away from Points.- 4. Divisors and Rational Mappings.- 5. The Space Associated with a Divisor.- Exercises.- � 2. Divisors on Curves.- 1. The Degree of a Divisor on a Curve.- 2. Bezout's Theorem on Curves.- 3. Cubic Curves.- 4. The Dimension of a Divisor.- Exercises.- �3. Algebraic Groups.- 1. Addition of Points on a Plane Cubic Curve.- 2. Algebraic Groups.- 3. Factor Groups. Chevalley's Theorem.- 4. Abelian Varieties.- 5. Picard Varieties.- Exercises.- �4. Differential Forms.- 1. One-Dimensional Regular Differential Forms.- 2. Algebraic Description of the Module of Differentials.- 3. Differential Forms of Higher Degrees.- 4. Rational Differential Forms.- Exercises.- � 5. Examples and Applications of Differential Forms.- 1. Behaviour under Mappings.- 2. Invariant Differential Forms on a Group.- 3. The Canonical Class.- 4. Hypersurfaces.- 5. Hyperelliptic Curves.- 6. The Riemann-Roch Theorem for Curves.- 7. Projective Immersions of Surfaces.- Exercises.- IV. Intersection Indices.- �1. Definition and Basic Properties.- 1. Definition of an Intersection Index.- 2. Additivity of the Intersection Index.- 3. Invariance under Equivalence.- 4. End of the Proof of Invariance.- 5. General Definition of the Intersection Index.- Exercises.- �2. Applications and Generalizations of Intersection Indices.- 1. Bezout's Theorem in a Projective Space and Products of Projective Spaces.- 2. Varieties over the Field of Real Numbers.- 3. The Genus of a Smooth Curve on a Surface.- 4. The Ring of Classes of Cycles.- Exercises.- � 3. Birational Isomorphisms of Surfaces.- 1. ?-Processes of Surfaces.- 2. Some Intersection Indices.- 3. Elimination of Points of Indeterminacy.- 4. Decomposition into ?-Processes.- 5. Notes and Exampl
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