534SM - ADVANCED GEOMETRY 3 2019/20
Schema della sezione
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References File PDF
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Final program of the course with updated bibliography
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Conducting exams in the coronavirus emergency
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Complete notes of the course given in 2018/19.
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Lesson 1 File PDF
Short introduction and aim of the course.
Basic facts on affine and projective space.
Definition of affine variety. Zariski topology.
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File audio AAC
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Lesson 2 File PDF
Graded rings, homogeneous ideals.
Projective zeroes of a polynomial. Projective varieties and Zariski topology on the projective space.
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Examples of affine and projective varieties. Hypersurfaces, product of affine spaces, Segre quadric, embedding of affine space in projective space.
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Added the solution of exercise 3.1.
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Lesson 4 File PDF
Ideal of a subset of the affine or projective space. Hilbert's Nullstellensatz.
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Pages 21-23 of Walker
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Added a couple of remarks, typos corrected.
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Added some remarks and hints on the Exercises, after the discussion of March 23.
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Correction in the Remark after the proof of Nullstellensatz.
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Lesson 5 File PDF
Proof of Noether Normalization Lemma
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Lesson 6 File PDF
Projective closure of an affine variety.
The skew cubic and its minimal free resolution.
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Small corrections.
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Lesson 7 File PDF
Irreducible topological spaces. Irreducible components of algebraic varieies.
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Small corrections
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Lesson 8 File PDF
Dimension
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Added a few comments and corrections
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Lesson 9 File PDF
Dimension theory for K-algebras.
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Added a remark and some clarification on the Corollaries.
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Lesson 10 File PDF
Regular and rational functions on algebraic varieties
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Extended version
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Small changes
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Lesson 11 File PDF
Regular maps and isomorphisms.
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The paragraph on category theory has been moved to a new Lesson 12; a few other small changes.
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Changes and corrections following the observations that emerged in the lecture of 20th April.
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Added the solution to Exercise 3.
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Lesson 12 File PDF
The language of categories.
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Lesson 13 File PDF
Rational maps
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Added some remarks, small corrections.
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Lesson 14 File PDF
Product of quasi-projective varieties and tensors. -
Misprints corrected, mainly in notation.
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Lesson 15 File PDF
Dimension of an intersection of algebraic varieties.
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Enlarged version
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Lesson 16 File PDF
Complete varieties and the theorem of completeness for projective varities.
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Lesson 17 File PDF
Tangent space and smoothness
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Enlarged version
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Corrected version.
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Lesson 18 File PDF
Finite morphisms and blow-ups
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Added an exercise.
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Mistakes corrected
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Exemple 3 corrected.
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Lesson 19 File PDF
Grassmannians.
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New Theorem 1.8 and minor corrections.
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Lesson 20 File PDF
Theorem of the fibres and application to lines on hypersurfaces.
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