reflection
发表于 2025-3-26 22:07:30
Smooth and Singular Points,Let . be an affine variety, with . and let . be a point of .. Let . be a line passing through ., so that . has parametric equations of the form .The polynomial system in .has the solution .. If the polynomials . are all identically 0, this means that . is contained in ..
MIRE
发表于 2025-3-27 02:58:33
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CHIP
发表于 2025-3-27 07:04:30
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Microgram
发表于 2025-3-27 11:16:01
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报复
发表于 2025-3-27 14:34:36
Divisors, Linear Equivalence, Linear Series,In this chapter . will be an irreducible projective plane curve and we will denote by . its smooth birational model. A point . of . will be sometimes called a . of . . at the point ..
填满
发表于 2025-3-27 20:57:47
Morphisms,ery regular function ., the function . is regular on .. We will denote by .(., .) the set of all morphisms from . to .. It is clear that the identity is a morphism and the composition of two morphisms is a morphism.
平静生活
发表于 2025-3-27 22:30:20
Product of Varieties,t of projective spaces is not a projective space. In this chapter we will give a structure of a projective variety on the product of projective spaces, which will make it possible to define the general concept of product of quasi–projective varieties.
CANDY
发表于 2025-3-28 02:21:32
The Cayley Form,two projections . and .. Consider the subset . of . defined in the following way .. . is a closed subset of .. . is a closed subset of ., so it suffices to show that there is a closed subset . of . such that ..
书法
发表于 2025-3-28 06:30:48
Ciro CilibertoProvides a self contained introduction to Algebraic Geometry for undergraduate students.Contains many exercises, some of them with solution.Useful for non-experts who want to learn the basics of Algeb
NADIR
发表于 2025-3-28 10:46:57
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