User Robin Chapman

15 votes

Can SO_n(R) be approximated arbitrarily well using a discrete subgroup?

answered Jul 24, 2010 at 7:04

15 votes

Accepted

fibonacci series mod a number

answered Oct 2, 2010 at 6:51

15 votes

Accepted

Injective maps $\mathbb{R}^{n} \to \mathbb{R}^{m}$

answered Aug 2, 2010 at 9:53

15 votes

Accepted

Are the path components of a loop space homotopy equivalent?

answered Aug 8, 2010 at 14:34

14 votes

connection between the Gaussian and the Cauchy distribution

answered Aug 6, 2010 at 8:37

14 votes

coordinates of vertices of regular simplex

answered Sep 14, 2010 at 21:34

14 votes

Why is every quadratic subfield of a Galois extension of the rationals with the quaternions as Galois group real?

answered Sep 21, 2010 at 6:10

14 votes

Accepted

Sylow's theorem 3rd Proof Page 96 I.N.Herstein

answered Aug 1, 2010 at 16:52

13 votes

Almost orthogonal vectors

answered May 16, 2010 at 7:48

13 votes

Accepted

Solvable transitive groups of prime degree

answered May 10, 2010 at 12:33

13 votes

Accepted

How many Hecke operators span the level 1 Hecke algebra?

answered Oct 19, 2010 at 17:45

12 votes

Accepted

Any sum of 2 dice with equal probability

answered Oct 6, 2010 at 18:39

12 votes

Maximum determinant of $\{0,1\}$-valued $n\times n$-matrices

answered Sep 23, 2010 at 19:45

12 votes

Accepted

Parametrization of O(3)

answered Nov 18, 2010 at 15:04

12 votes

Accepted

Ehrhart polynomial

answered Aug 18, 2010 at 18:13

12 votes

Accepted

If the fourier transformed of f is odd, is f odd?

answered Apr 1, 2010 at 6:26

12 votes

Accepted

isogeny of elliptic curves

answered Apr 7, 2010 at 17:28

12 votes

Zariski closed sets in C^n are of measure 0

answered May 22, 2010 at 15:19

12 votes

Dirichlet's theorem for number fields

answered Jun 23, 2010 at 7:17

12 votes

Ranks of free submodules of free modules

answered Jul 7, 2010 at 6:44

11 votes

Accepted

Generators for congruence group $\Gamma(2)$

answered Jun 27, 2010 at 12:03

11 votes

Accepted

Positivity of a finite sum

answered Jul 16, 2010 at 12:01

11 votes

Accepted

Isolated quadratic residues in integers mod p

answered May 21, 2010 at 12:47

11 votes

The resultant and the ideal generated by two polynomials in $\mathbb{Z}[x]$

answered Mar 11, 2010 at 13:31

11 votes

How do they verify a verifier of formalized proofs?

answered Mar 16, 2010 at 21:31

11 votes

Accepted

Rado graph containing infinitely many isomorphic subgraphs

answered Mar 17, 2010 at 10:40

11 votes

Accepted

Relations between two particular elements of SL_2(Z)?

answered Mar 18, 2010 at 7:26

11 votes

Accepted

On the $\mathbb R$-algebra structure on $C^\infty(M)$.

answered Aug 28, 2010 at 17:40

10 votes

Between mu- and primitive recursion

answered Nov 17, 2010 at 13:47

10 votes

Algorithms for finding rational points on an elliptic curve?

answered Oct 13, 2010 at 14:04

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221 Answers

Can SO_n(R) be approximated arbitrarily well using a discrete subgroup?

fibonacci series mod a number

Injective maps $\mathbb{R}^{n} \to \mathbb{R}^{m}$

Are the path components of a loop space homotopy equivalent?

connection between the Gaussian and the Cauchy distribution

coordinates of vertices of regular simplex

Why is every quadratic subfield of a Galois extension of the rationals with the quaternions as Galois group real?

Sylow's theorem 3rd Proof Page 96 I.N.Herstein

Almost orthogonal vectors

Solvable transitive groups of prime degree

How many Hecke operators span the level 1 Hecke algebra?

Any sum of 2 dice with equal probability

Maximum determinant of $\{0,1\}$-valued $n\times n$-matrices

Parametrization of O(3)

Ehrhart polynomial

If the fourier transformed of f is odd, is f odd?

isogeny of elliptic curves

Zariski closed sets in C^n are of measure 0

Dirichlet's theorem for number fields

Ranks of free submodules of free modules

Generators for congruence group $\Gamma(2)$

Positivity of a finite sum

Isolated quadratic residues in integers mod p

The resultant and the ideal generated by two polynomials in $\mathbb{Z}[x]$

How do they verify a verifier of formalized proofs?

Rado graph containing infinitely many isomorphic subgraphs

Relations between two particular elements of SL_2(Z)?

On the $\mathbb R$-algebra structure on $C^\infty(M)$.

Between mu- and primitive recursion

Algorithms for finding rational points on an elliptic curve?