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Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.
2
votes
1
answer
154
views
Need references on moduli of subvarieties of given dimension and degree of the projective sp...
Hello,
I need to understand the moduli of subvarieties of given dimension and degree of the projective space P^N. Is there any good place to look into? Thank you.
9
votes
4
answers
2k
views
Reference needed for negative curves on blowup of the projective plane at generic points
Hello,
I usually see the following theorem without seeing any reference or explanation
Theorem: Let X be a blowup of $P^2$ at generic r points. If $r\leq 8$ then there are only finitely many (-1) cu …
5
votes
1
answer
3k
views
Reference needed for projection from a linear subspace (projecting cone)
Hello,
I want to find a good reference on projecting cone, which is described below: Let $X$ be an irreducible subvariety of a projective space $\mathbb{P}^n$ (over $\mathbb{C}$ or in general an alge …