User Franz Lemmermeyer - MathOverflow

Franz Lemmermeyer

Member for 14 years, 2 months
Last seen this week

rzuser.uni-heidelberg.de/~hb3
Jagstzell, Germany

52 Questions

Score Activity Newest Views

76 votes

2 answers

6k views

Is it known that the ring of periods is not a field?

asked Apr 6, 2010 at 13:20

46 votes

2 answers

5k views

Formal group laws and L-series

asked Jan 16, 2011 at 15:41

40 votes

2 answers

4k views

Euler and the Four-Squares Theorem

asked Aug 31, 2010 at 16:32

40 votes

1 answer

3k views

First correct proof of FLT for exponent 3?

asked Dec 14, 2010 at 16:35

31 votes

3 answers

2k views

Trost's Discriminant Trick

asked Aug 26, 2010 at 19:12

31 votes

2 answers

3k views

Elementary Aspects of Galois Deformation

asked Mar 1, 2010 at 19:51

30 votes

1 answer

3k views

Ramanujan and algebraic number theory

asked Oct 24, 2010 at 15:43

28 votes

0 answers

1k views

Derivative of Class number of real quadratic fields

asked Nov 25, 2012 at 18:14

25 votes

3 answers

2k views

Slick proof of Stirling's Formula?

asked Dec 31, 2020 at 18:53

24 votes

2 answers

1k views

Elementary congruences and L-functions

asked Feb 12, 2016 at 19:06

22 votes

1 answer

2k views

Weil Conjectures for Number Fields

asked Apr 4, 2011 at 16:11

22 votes

0 answers

1k views

Most "natural" proof of the existence of Hilbert class fields

asked Oct 8, 2010 at 14:01

22 votes

2 answers

2k views

Dirichlet and the prime number theorem

asked Mar 4, 2010 at 21:44

20 votes

1 answer

1k views

Irrational logs and the harmonic series

asked Feb 7, 2010 at 14:20

20 votes

2 answers

988 views

Poles from the Continued Fraction Expansion of the Tangent Function?

asked Oct 16, 2010 at 13:46

20 votes

2 answers

981 views

Are quadratic units cyclotomic norms?

asked Apr 11, 2016 at 18:30

20 votes

1 answer

1k views

Class number parity in pure cubic number fields

asked Jul 11, 2011 at 15:54

19 votes

1 answer

2k views

Legendre and sums of three squares

asked Oct 8, 2011 at 14:38

19 votes

2 answers

2k views

History of Irrationality results

asked Dec 16, 2010 at 17:42

19 votes

4 answers

3k views

Binary Quadratic Forms in Characteristic 2

asked Mar 18, 2010 at 15:48

18 votes

2 answers

2k views

Primes of the form a^2+1

asked Feb 8, 2010 at 20:14

18 votes

1 answer

2k views

What's the Hilbert class field of an elliptic curve?

asked Feb 21, 2010 at 21:21

17 votes

2 answers

2k views

Quaternary quadratic forms and Elliptic curves via Langlands?

asked Jul 22, 2010 at 15:38

16 votes

3 answers

1k views

Irreducibility of polynomials related to quadratic residues

asked Mar 9, 2010 at 18:51

16 votes

2 answers

3k views

The parity conjecture

asked Jul 29, 2011 at 19:44

15 votes

1 answer

2k views

Fermat's Bachet-Mordell Equation

asked Aug 26, 2010 at 19:32

14 votes

2 answers

2k views

Dirichlet's divisor problem via Lambert series

asked Nov 7, 2010 at 11:44

14 votes

3 answers

934 views

Narayana and Fermat's Factorization Method

asked Jun 13, 2017 at 11:28

14 votes

1 answer

473 views

Geometric Mean of $L(1,\chi)$ for quadratic Dirichlet characters

asked Jun 5, 2015 at 13:54

13 votes

2 answers

905 views

Sums of two cubes

asked Aug 8, 2011 at 17:49

1