User aglearner

9 votes

When is a closed differential form harmonic relative to some metric?

answered Sep 9, 2011 at 22:10

9 votes

Video lectures for algebraic geometry

answered Dec 17, 2020 at 18:41

8 votes

Video lectures for algebraic geometry

answered Oct 13, 2011 at 21:33

7 votes

Accepted

Is a smooth cubic threefold diffeomorphic to a rational threefold?

answered Dec 7, 2012 at 11:13

7 votes

Smoothness of the branch divisor and ramification on surfaces

answered Oct 19, 2016 at 22:59

7 votes

Higher dimensional Bezout via Hilbert polynomials: a reference

answered Jan 6, 2014 at 7:07

6 votes

Elementary + short + useful

answered Nov 9, 2011 at 11:09

6 votes

Why study orbifolds?

answered Jun 6, 2018 at 23:45

5 votes

Accepted

Example of finite order symplectomorphism which is not an automorphism

answered Oct 16, 2016 at 0:52

5 votes

Accepted

Disconnectedness of Hilbert schemes of projective schemes

answered Nov 29, 2012 at 16:07

4 votes

"Classical" consequences of Bezout's theorem in dimensions $>2$

answered Jan 6, 2014 at 6:53

4 votes

Some Elementary Schubert Calculus Calculations

answered Mar 30, 2018 at 13:57

4 votes

Multisections of the universal curve

answered Dec 10, 2019 at 13:48

4 votes

Relevant mathematics to the recent coronavirus outbreak

answered Mar 18, 2020 at 22:36

3 votes

Examples of Calabi-Yau manifolds with $\mathbb{T}^2$ symmetry

answered Dec 19, 2019 at 12:17

3 votes

Online video of some courses

answered Dec 17, 2020 at 18:45

3 votes

Self homeomorphism of $\mathbb CP^1$ holomorphic a.e

answered May 25, 2021 at 12:53

3 votes

Does any subset of a finitely generated group with positive upper density contain three points in arithmetic progression?

answered Jun 17, 2021 at 11:31

3 votes

Accepted

Maps to $K(\pi,1)$ spaces from manifolds with $S^1$-action

answered Mar 29, 2017 at 14:52

3 votes

Fixing a mistake in "An introduction to invariants and moduli"

answered Mar 23, 2011 at 0:18

2 votes

CSC Kahler metrics on a blown-up torus

answered Jun 28, 2017 at 23:17

2 votes

Accepted

Anti-canonical divisorial contractions of weak Fano $3$-folds

answered Sep 15, 2017 at 14:15

2 votes

Length of simple closed curve in half-translation surface

answered Oct 14, 2017 at 22:27

2 votes

Two embedded symplectic spheres with zero square in a symplectic $4$-manifold

answered Oct 31, 2017 at 9:25

2 votes

Two smooth tangent almost complex curves in a $4$-manifold

answered Apr 1, 2018 at 12:32

2 votes

Accepted

Sufficient conditions for a divisor to be connected on a K3 surface

answered Feb 14, 2014 at 12:26

2 votes

Smoothness of ramification divisor

answered Jan 24, 2020 at 22:20

2 votes

Accepted

At most countably many symplectic forms in given cohomology class

answered Sep 4, 2020 at 0:22

2 votes

Reading list for basic differential geometry?

answered Aug 31, 2018 at 14:26

1 vote

The cone of curves of complex projective manifolds with an algebraic torus action

answered Jun 6, 2019 at 17:04

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36 Answers

When is a closed differential form harmonic relative to some metric?

Video lectures for algebraic geometry

Video lectures for algebraic geometry

Is a smooth cubic threefold diffeomorphic to a rational threefold?

Smoothness of the branch divisor and ramification on surfaces

Higher dimensional Bezout via Hilbert polynomials: a reference

Elementary + short + useful

Why study orbifolds?

Example of finite order symplectomorphism which is not an automorphism

Disconnectedness of Hilbert schemes of projective schemes

"Classical" consequences of Bezout's theorem in dimensions $>2$

Some Elementary Schubert Calculus Calculations

Multisections of the universal curve

Relevant mathematics to the recent coronavirus outbreak

Examples of Calabi-Yau manifolds with $\mathbb{T}^2$ symmetry

Online video of some courses

Self homeomorphism of $\mathbb CP^1$ holomorphic a.e

Does any subset of a finitely generated group with positive upper density contain three points in arithmetic progression?

Maps to $K(\pi,1)$ spaces from manifolds with $S^1$-action

Fixing a mistake in "An introduction to invariants and moduli"

CSC Kahler metrics on a blown-up torus

Anti-canonical divisorial contractions of weak Fano $3$-folds

Length of simple closed curve in half-translation surface

Two embedded symplectic spheres with zero square in a symplectic $4$-manifold

Two smooth tangent almost complex curves in a $4$-manifold

Sufficient conditions for a divisor to be connected on a K3 surface

Smoothness of ramification divisor

At most countably many symplectic forms in given cohomology class

Reading list for basic differential geometry?

The cone of curves of complex projective manifolds with an algebraic torus action