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Basics
  • Member for 10 years, 7 months
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9 votes
2 answers
2k views

Why is a Kummer surface simply-connected?

9 votes
1 answer
724 views

Quotients of $K3$ surfaces by finite groups

8 votes
1 answer
282 views

Why are there finitely many deformation types of Calabi-Yau threefolds for a given diffeomorhpic type if $b_2 =1$?

8 votes
1 answer
253 views

Primitivity of subgroups in the Picard groups of anticanonical $K3$ surfaces

6 votes
1 answer
261 views

Examples of non-Kähler compact complex manifolds of dimension four with some properties

6 votes
2 answers
303 views

Possible number of components of anticanonical sections of projective manifolds

6 votes
2 answers
375 views

CY fibration over $\mathbb P^1$ without any singular fibers

6 votes
0 answers
268 views

Exceptional quartic K3 surfaces

5 votes
1 answer
428 views

Threefolds with the same Betti numbers and the same Chern numbers

5 votes
0 answers
283 views

Examples or references for this claim about elliptic Calabi-Yau threefolds

5 votes
1 answer
268 views

Mirror symmetry for K3 fibered Calabi-Yau threefolds

5 votes
2 answers
477 views

What are those 'others' in 'the classification table of algebraic three-folds'

4 votes
0 answers
150 views

Mirror partner of Calabi-Yau threefold

4 votes
1 answer
1k views

What is the value of the infinite product: $(1+ \frac{1}{1^1}) (1+ \frac{1}{2^2}) (1+ \frac{1}{3^3}) \cdots $? [closed]

4 votes
0 answers
103 views

Singularities of hypersurfaces in projective bundles

4 votes
1 answer
164 views

Big divisors and projectivity

3 votes
0 answers
284 views

Fundamental group of blow-ups

3 votes
1 answer
230 views

Irrationality of some threefolds

3 votes
1 answer
375 views

Examples of CY fibrations over $\mathbb P^1$

3 votes
1 answer
177 views

Projective manifold whose anticanonical section is composed of two components

3 votes
0 answers
181 views

Smallest Hodge numbers of Calabi-Yau threefolds ever found

3 votes
0 answers
264 views

A K3 cover over a Del Pezzo surface

3 votes
0 answers
267 views

K3 surfaces in Fano threefolds

3 votes
0 answers
239 views

Ample divisor of degree two on a blow-up of $\mathbb P^2$ at nine points

3 votes
0 answers
197 views

A similarity problem over matrices over Gaussian integers

3 votes
0 answers
207 views

Examples of non-Kähler Calabi-Yau 4-folds

3 votes
0 answers
149 views

Rational threefolds with base-point free anticanonical pencil

3 votes
1 answer
335 views

Ampleness after repeated blow-ups

3 votes
1 answer
637 views

Family of elliptic curves in $\mathbb P^3$

2 votes
0 answers
281 views

An example of threefold with $K3$ fibration