User Michael Beeson

20 votes

6 answers

7k views

sums of rational squares

asked Feb 15, 2012 at 19:02

16 votes

5 answers

2k views

does the j-invariant satisfy a rational differential equation?

asked Feb 3, 2011 at 18:37

13 votes

0 answers

515 views

pizza lemma (topology)

asked Feb 1, 2016 at 14:52

11 votes

1 answer

590 views

Sign and coefficients of fundamental unit of quadratic field

asked Jun 12, 2022 at 20:44

7 votes

1 answer

1k views

dependence of eigenvalues on parameters

asked Feb 14, 2011 at 21:39

5 votes

2 answers

4k views

c^2 = a^2 + b^2 + ab and its solutions

asked May 18, 2012 at 15:45

4 votes

2 answers

535 views

computing Bernoulli numbers

asked May 16, 2013 at 14:05

4 votes

1 answer

6k views

eigenvalues of a Möbius strip

asked Feb 22, 2011 at 6:30

4 votes

0 answers

148 views

$L(1,\chi_d)$ for even d

asked Nov 18, 2022 at 16:43

3 votes

1 answer

1k views

finding isothermal coordinates uniformly

asked Mar 14, 2011 at 23:31

3 votes

1 answer

533 views

limit cycles of dynamical systems

asked Nov 22, 2011 at 17:41

3 votes

1 answer

473 views

Solutions of the "tiling equation" $N = 2K^2 - M^2$

asked Jan 23, 2012 at 16:13

2 votes

1 answer

241 views

class number and negative Pell equation

asked Jun 26, 2022 at 17:56

2 votes

0 answers

221 views

value of $L(1,\chi_{9529})$ and Littlewood's bound

asked Nov 12, 2022 at 7:47

2 votes

1 answer

57 views

parametrize triangles meeting certain conditions

asked Feb 16, 2019 at 0:59

1 vote

0 answers

203 views

Large values of $L(1,\chi)$ for quadratic Dirichlet characters $\chi$

asked Feb 14, 2022 at 22:08

1 vote

1 answer

260 views

derivative of Riemann zeta function

asked Jun 13, 2013 at 1:08

0 votes

0 answers

289 views

Third variation of area of a minimal surface

asked Mar 30, 2014 at 0:03

0 votes

0 answers

86 views

compute class number of real quadratic field without first computing fundamental unit

asked Jul 26, 2019 at 19:05

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19 Questions

sums of rational squares

does the j-invariant satisfy a rational differential equation?

pizza lemma (topology)

Sign and coefficients of fundamental unit of quadratic field

dependence of eigenvalues on parameters

c^2 = a^2 + b^2 + ab and its solutions

computing Bernoulli numbers

eigenvalues of a Möbius strip

$L(1,\chi_d)$ for even d

finding isothermal coordinates uniformly

limit cycles of dynamical systems

Solutions of the "tiling equation" $N = 2K^2 - M^2$

class number and negative Pell equation

value of $L(1,\chi_{9529})$ and Littlewood's bound

parametrize triangles meeting certain conditions

Large values of $L(1,\chi)$ for quadratic Dirichlet characters $\chi$

derivative of Riemann zeta function

Third variation of area of a minimal surface

compute class number of real quadratic field without first computing fundamental unit