User Remke Kloosterman

16 votes

Rank of $x (x^2 - 1) = c (c^2 - 1) y^2 $ over $\mathbb{Q}$ for given rational values of $c$

answered Jun 17, 2012 at 20:11

12 votes

Accepted

Counterexample to Proposition of Granville related to abc conjecture

answered Apr 12, 2015 at 8:36

12 votes

Computing factorials modulo p^N

answered Mar 26, 2011 at 11:32

11 votes

Accepted

Are orbifold singularities canonical?

answered Aug 23, 2010 at 10:01

11 votes

Accepted

Mordell-Weil of an elliptic surface after adjoining a nontorsion section: as small as possible?

answered Jul 26, 2013 at 12:36

10 votes

Does $(x^2 - 1)(y^2 - 1) = c z^4$ have a rational point, with z non-zero, for any given rational c?

answered May 19, 2012 at 17:31

10 votes

Accepted

How is this surface related to the square of that CM elliptic curve?

answered May 15, 2011 at 20:32

10 votes

Accepted

Hodge diamond of a Calabi-Yau fourfold

answered Jul 11, 2011 at 20:21

10 votes

Which algebraic surfaces have non-trivial H^1?

answered Apr 27, 2014 at 18:37

9 votes

What heuristic evidence is there concerning the unboundedness or boundedness of Mordell-Weil ranks of elliptic curves over $\Bbb Q$?

answered Sep 13, 2010 at 19:51

9 votes

When is an algebraic variety $\mathbb{Q}$-factorial?

answered Aug 28, 2011 at 19:57

8 votes

Accepted

Elliptic curve group law, Sum of intersection points

answered Nov 1, 2011 at 19:17

8 votes

How do you prove that a field is isomorphic to C(x)?

answered Aug 24, 2010 at 11:26

7 votes

Calculations of Pic^0, Pic, NS of surfaces

answered Sep 30, 2010 at 7:37

7 votes

Which 'well-known' algebraic geometric results do not hold in characteristic 2?

answered Jul 6, 2011 at 19:22

7 votes

Accepted

Singular fibres in the definition of an elliptic surface

answered Apr 4, 2012 at 12:26

7 votes

Example of non-modular elliptic surface?

answered Oct 17, 2013 at 22:33

7 votes

Rational zeros of a polynomial

answered Jul 3, 2013 at 12:35

6 votes

Accepted

Elliptic fibrations with few singular fibers

answered Dec 8, 2015 at 17:42

6 votes

Accepted

Isogenies from hyperelliptic to elliptic curves

answered Sep 13, 2011 at 8:40

6 votes

Cubic hypersurfaces of complex projective space

answered Jun 17, 2011 at 13:50

5 votes

Cohomology of complete intersections

answered Nov 1, 2011 at 18:54

5 votes

Mordell-Weil of an elliptic surface after adjoining a nontorsion section: as small as possible?

answered Dec 15, 2013 at 10:30

5 votes

Accepted

Selmer of an abelian variety versus that of its dual.

answered Mar 9, 2011 at 20:46

5 votes

Period integrals of the fiber of elliptically fibered K3 manifolds

answered Mar 18, 2011 at 14:13

5 votes

Accepted

Is resolution of singularities effective?

answered Aug 25, 2010 at 7:55

5 votes

Reference for elliptic 3-folds

answered Aug 4, 2011 at 8:21

5 votes

Where can I find the divisor class groups of du Val singularities?

answered Aug 9, 2011 at 9:52

5 votes

Accepted

Negative self-intersection and finiteness

answered Sep 23, 2015 at 12:07

4 votes

Does there exist a holomorphic fibration of genus two over $\mathbb{P}^{1}$ with $7$ nodal singularities?

answered Sep 11, 2015 at 7:36

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52 Answers

Rank of $x (x^2 - 1) = c (c^2 - 1) y^2 $ over $\mathbb{Q}$ for given rational values of $c$

Counterexample to Proposition of Granville related to abc conjecture

Computing factorials modulo p^N

Are orbifold singularities canonical?

Mordell-Weil of an elliptic surface after adjoining a nontorsion section: as small as possible?

Does $(x^2 - 1)(y^2 - 1) = c z^4$ have a rational point, with z non-zero, for any given rational c?

How is this surface related to the square of that CM elliptic curve?

Hodge diamond of a Calabi-Yau fourfold

Which algebraic surfaces have non-trivial H^1?

What heuristic evidence is there concerning the unboundedness or boundedness of Mordell-Weil ranks of elliptic curves over $\Bbb Q$?

When is an algebraic variety $\mathbb{Q}$-factorial?

Elliptic curve group law, Sum of intersection points

How do you prove that a field is isomorphic to C(x)?

Calculations of Pic^0, Pic, NS of surfaces

Which 'well-known' algebraic geometric results do not hold in characteristic 2?

Singular fibres in the definition of an elliptic surface

Example of non-modular elliptic surface?

Rational zeros of a polynomial

Elliptic fibrations with few singular fibers

Isogenies from hyperelliptic to elliptic curves

Cubic hypersurfaces of complex projective space

Cohomology of complete intersections

Mordell-Weil of an elliptic surface after adjoining a nontorsion section: as small as possible?

Selmer of an abelian variety versus that of its dual.

Period integrals of the fiber of elliptically fibered K3 manifolds

Is resolution of singularities effective?

Reference for elliptic 3-folds

Where can I find the divisor class groups of du Val singularities?

Negative self-intersection and finiteness

Does there exist a holomorphic fibration of genus two over $\mathbb{P}^{1}$ with $7$ nodal singularities?