User Philip Engel

13 votes

0 answers

479 views

Structures between PL and smooth

asked Jan 12, 2021 at 20:02

8 votes

1 answer

2k views

Contracting a curve of negative self-intersection on a surface

asked Mar 1, 2013 at 21:01

7 votes

1 answer

370 views

Modularity of certain theta series associated to hyperbolic lattice

asked Nov 14, 2016 at 3:18

6 votes

0 answers

304 views

Algebraic deformation invariance of Gromov-Witten invariants

asked Dec 14, 2020 at 17:14

6 votes

1 answer

359 views

Factors of polynomials of bounded height

asked May 27, 2021 at 3:04

5 votes

1 answer

350 views

Quotient of a smooth projective surface by an involution

asked Feb 13, 2019 at 22:54

5 votes

1 answer

668 views

Is there a way to define Hecke operators "inherently" as certain endomorphisms of the Jacobian?

asked Jul 29, 2010 at 4:48

4 votes

1 answer

251 views

“Logarithmic” form of Kodaira Embedding

asked Jun 19, 2022 at 16:23

4 votes

0 answers

247 views

Is there an analogue of the linking pairing in etale, crystalline, etc cohomology theories?

asked Oct 24, 2016 at 23:38

4 votes

1 answer

452 views

Exotic $\mathbb{R}^4$ with a complex structure?

asked Dec 30, 2020 at 18:11

4 votes

0 answers

229 views

When is a toric variety a Poincare duality space?

asked Feb 26, 2021 at 22:54

3 votes

0 answers

189 views

(Implemented) algorithm for Hodge numbers

asked Dec 1, 2019 at 2:48

3 votes

1 answer

346 views

Analytically but not algebraically smoothable singularity

asked Mar 12, 2015 at 19:48

2 votes

0 answers

392 views

Complete curves in $M_g$ and Theta Characteristics

asked Apr 30, 2013 at 10:25

2 votes

2 answers

699 views

Almost Toric Symplectic Four-Manifolds

asked May 6, 2014 at 15:28

2 votes

0 answers

147 views

Open Period Integrals of Elliptically Fibered K3 surfaces

asked May 20, 2016 at 23:59

0 votes

0 answers

238 views

Hyperbolic Space, Lattice Isometries, and Polyhedral Fundamental Domains

asked Dec 3, 2015 at 5:04

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17 Questions

Structures between PL and smooth

Contracting a curve of negative self-intersection on a surface

Modularity of certain theta series associated to hyperbolic lattice

Algebraic deformation invariance of Gromov-Witten invariants

Factors of polynomials of bounded height

Quotient of a smooth projective surface by an involution

Is there a way to define Hecke operators "inherently" as certain endomorphisms of the Jacobian?

“Logarithmic” form of Kodaira Embedding

Is there an analogue of the linking pairing in etale, crystalline, etc cohomology theories?

Exotic $\mathbb{R}^4$ with a complex structure?

When is a toric variety a Poincare duality space?

(Implemented) algorithm for Hodge numbers

Analytically but not algebraically smoothable singularity

Complete curves in $M_g$ and Theta Characteristics

Almost Toric Symplectic Four-Manifolds

Open Period Integrals of Elliptically Fibered K3 surfaces

Hyperbolic Space, Lattice Isometries, and Polyhedral Fundamental Domains