Charles Siegel's user avatar
Charles Siegel's user avatar
Charles Siegel's user avatar
Charles Siegel
  • Member for 13 years, 9 months
  • Last seen more than 9 years ago
101 votes
Accepted

Studying Euclidean geometry using hyperbolic criteria

21 votes
Accepted

How many cubic curves are there?

11 votes

Intuitive explanations for the concepts of divisor and genus

9 votes

Is there a general formula for solving Quartic (Degree $4$) equations?

7 votes
Accepted

Cotangent bundle

4 votes
Accepted

Are these points singular?

4 votes
Accepted

Prym variety associated to an étale cover of degree 2 of an hyperelliptic curve.

4 votes
Accepted

Why does the discriminant of an integral polynomial have integral coefficients?

4 votes

Cohomology of line bundles on the blowup of $\mathbb P^2$

3 votes

What is the best way to factor arbitrary polynomials?

3 votes
Accepted

Projective plane and its dual

2 votes
Accepted

Projective duality

2 votes

Lie algebras and infinitesimals

2 votes

Symmetric matrices and orthogonal diagonalization.

1 vote

Trying to piece together an integral addition theorem

1 vote

Describe the locus in the complex plane of the zeros of a quartic polynomial as the constant term varies

0 votes

Why is compactness in logic called compactness?

-1 votes

Why is the "finitely many" quantifier not definable in First Order Logic?