user avatar
user avatar
user avatar
Keivan Karai
  • Member for 12 years, 6 months
  • Last seen more than a week ago
  • Jacobs University
112 votes
8 answers
27k views

Zagier's one-sentence proof of a theorem of Fermat

27 votes
17 answers
8k views

Using slides in math classroom

26 votes
1 answer
3k views

connectivity of the group of orientation-preserving homeomorphisms of the sphere

25 votes
3 answers
3k views

Why is the identity element of a group denoted by $e$?

25 votes
2 answers
3k views

In what sense is the classification of all finite groups "impossible"?

15 votes
3 answers
1k views

Elementary lower bounds for the number of primes in arithmetic progressions

14 votes
3 answers
2k views

orientations for zero-dimensional manifolds

13 votes
3 answers
3k views

Is there a standard way to read the Legendre symbol?

13 votes
1 answer
1k views

is there a p-adic implicit function theorem?

12 votes
1 answer
917 views

Riemannian metrics on non-paracompact manifolds

10 votes
1 answer
605 views

What is the motivation behind Ramanujan's conjecture?

9 votes
1 answer
178 views

A variant of Nelson-Hadwiger Problem on the chromatic number of the plane

8 votes
2 answers
2k views

P-adic Arithmetic Software

7 votes
2 answers
486 views

Zermelo's proof for unique factorisation

6 votes
1 answer
385 views

The number of integral solutions to $x^2+y^2-az^2=0$

6 votes
1 answer
113 views

Uniform upper bounds for the return probability of random walks on $ \mathbb{R}$

5 votes
1 answer
185 views

When do volumes depend real-analytically on the parameters defining the regions?

5 votes
1 answer
185 views

Intrinsic characterisation of a class of rings

4 votes
2 answers
259 views

Orbits of the maximal compact subgroup on the light cone for $p$-adic groups

4 votes
2 answers
531 views

Suslin's Stability Theorem for Chevalley Groups

4 votes
2 answers
471 views

Quantitative Weierstraß approximation

3 votes
1 answer
3k views

A proof of the Bernstein inequality

2 votes
0 answers
571 views

nilpotent matrices over polynomial rings

2 votes
1 answer
320 views

$p$-adic analogues of $SO(3)$

2 votes
0 answers
107 views

Bounds on the number of zeros of a quadratic form

1 vote
1 answer
130 views

Transformation of height on projective varieties

1 vote
1 answer
417 views

Orbits of an action of maximal compact subgroups of p-adic orthogonal groups

0 votes
1 answer
285 views

identically distributed random variables and measure-preserving transformations

0 votes
1 answer
319 views

$p$-adic orthogonal groups in four variables

0 votes
0 answers
182 views

A question about chaining Vinogradov notation