44

Answers

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12

Does there exist an infinite non-commutative division ring with finite center?

5

Hilbert scheme of points on a surface as moduli space of semistable sheaves

3

On the construction of the varieties parametrizing special linear series on a curve

2

Irreducibility of fibers vs. irreducibility of fibered product

7

Does a weaker condition than vanishing derivative imply a function being constant?

3

Necessary and sufficient conditions for a sum of idempotents to be idempotent

6

is there some condition I can impose on families of curves on a surface such that the second Ext between the ideal sheaf and the structure sheaf is zero?

4

Riemann-Roch for Zero Cycles on a Surface

1

What’s the meaning of pencils in birational geometry?

1

General degree $d$ surface in $\mathbb{P}^3$

2

Irreducible “family” of relative effective divisors of a smooth morphism

9

Any irreducible component of the HIlbert scheme contains an irreducible element

4

Incidence Correspondence

16

Why the underlying function of a monomorphism may not be an injection

4

Incidences of Lines / Circles in the Plane

7

Quartic Space Curves

0

Euler characteristic of Weierstrass divisor

9

When does the blow-up of $CP^2$ at N points embed in $CP^4$?

2

Divisor intersecting non-negatively the negative part of its Zariski decomposition

4

Is it possible to check two curves on birational equivalence by some computer algebra system?

4

Condition on the canonical divisor for Yau Inequality - effective or ample?

5

Reference Request: Deformations of a map bijective to global sections of the pullback of the tangent sheaf

19

Can any smooth hyperelliptic curve be embedded in a quadric surface?

18

Taking “Zooming in on a point of a graph” seriously.

7

Line bundles, linear systems and normalization

1

Is restricting the support of an Artinian sheaf a closed condition?

1

Endomorphisms of stable vector bundles over a Riemann surface

9

Higher dimensional version of the Hurwitz formula?

3

A proof for a statement about polynomial automorphism

6

divisors on Abelian varieties