62

Answers
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9
The importance of EGA and SGA for “students of today”
9
What is the Euler characteristic of a Hilbert scheme of points of a singular algebraic curve?
8
Intersection numbers and theorem of the cube
8
Union of closed subschemes with the structure sheaf over it
8
Mirror symmetry mod p?! … Physics mod p?!
8
Differences between reflexives and projectives modules
8
About isogenies of abelian varieties
8
Ways of formulating homological algebra without diagram chasing
7
Confusion about how the first cohomology classifies torsors
7
Is there an obvious way for showing singularities are quotient?
7
Line bundles vs. Cartier divisors on a non-integral scheme
7
Two-dimensional quotient singularities are rational: why?
7
When is the canonical divisor of an algebraic surface smooth?
7
Elliptic Curves over F_1?
6
Moduli space of K3 surfaces
6
Flatness over non-reduced schemes
6
Proving if fibres are reduced or not.
6
Degrees of etale covers of stacks
6
Can injective modules over R give non-injective sheaves over Spec R?
6
When are Ehrhart polynomials polynomials?
5
Flatness for family of hypersurfaces
5
Minimal model which is necessarily singular
5
What are the prime ideals of k[[x,y]]?
5
Classification of simply connected smooth projective varieties?
5
Is an algebraic space group always a scheme?
5
How to think about CM rings?
5
Smoothness of Symmetric Powers
5
Why a subvariety of a variety of general type is of general type
4
Automorphism group of bi-elliptic surface
4
Applications of Faber’s conjecture
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