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danneks

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  • Last seen May 8 '18 at 5:41

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Top posts (26) All Questions Answers | Votes Newest

3 Homogeneous quadratic in $n$ variables has nonzero singular point iff associated symmetric matrix has zero determinant. Jan 21 '18
3 Birational equivalence of two curves on the projective plane Jan 30 '18
2 Is every hypersurface in projective space given by a single equation? Feb 6 '18
2 Why does birational equivalence preserve group law in elliptic curves? Jan 15 '18
2 How exact is the functor “tensoring with a locally free sheaf” Jan 17 '18
2 Question about Proposition II.6.9 from Hartshorne Jan 12 '18
2 Exercise 1.1.(c) in Hartshorne's Deformation Theory Feb 7 '18
2 Vanishing of cohomology on the fiber and base change Feb 27 '18
1 Degree of the union is the sum of degrees Jan 13 '18
1 Normal bundle of a curve in a quadric Feb 20 '18
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