Nikita Kalinin's user avatar
Nikita Kalinin's user avatar
Nikita Kalinin's user avatar
Nikita Kalinin
  • Member for 12 years, 9 months
  • Last seen this week
114 votes
3 answers
5k views

The number $\pi$ and summation by $SL(2,\mathbb Z)$

37 votes
3 answers
5k views

How many quit mathematics because they (are afraid that they) can not find a permanent job?

36 votes
2 answers
2k views

Different styles of writing/reading articles

35 votes
4 answers
5k views

Why are differential forms called closed and exact?

29 votes
8 answers
2k views

A variation of the law of large numbers for random points in a square

25 votes
6 answers
7k views

prime ideals in C([0,1])

15 votes
2 answers
895 views

$\pi_4$ of simply-connected 4-manifold

14 votes
2 answers
3k views

Slice knots and exotic $\mathbb R^4$

13 votes
6 answers
2k views

Polynomial contact structures on $RP^3$

13 votes
0 answers
478 views

Strange formula in arithmetic dynamic

12 votes
2 answers
648 views

Can any numerical polynomial be a Hilbert polynomial of something?

12 votes
3 answers
2k views

Quadratic reciprocity and Weil reciprocity theorem

11 votes
0 answers
196 views

Mathematical pendulum and $\mathbb C P^n$

10 votes
0 answers
242 views

How the hyperbolic metric changes when we add a puncture?

10 votes
2 answers
819 views

Sum of two tangent bundles of $S^{2n}$

8 votes
6 answers
2k views

Uncountable preimage of every point

8 votes
1 answer
331 views

Constants of motion for Droop equation

8 votes
0 answers
246 views

Positive integer solutions of $ab+ac+ad+bc+bd+cd=n$

7 votes
1 answer
448 views

Space-discriminating injective curve

7 votes
4 answers
930 views

I was wondering if the set of singular loops is a (somewhere) submanifold of loop space?

6 votes
1 answer
432 views

G = [G,G] with two generators

6 votes
0 answers
639 views

Bezout Theorem in $\mathbb P^3$

6 votes
1 answer
608 views

Nagata's conjecture in positive characteristic

6 votes
1 answer
176 views

Maximizing ratio volume/diameter^n by an affinity

6 votes
3 answers
698 views

Fundamental solution of Discrete Laplace in the plane

5 votes
1 answer
210 views

Switching oriented paths in a graph

5 votes
2 answers
363 views

Diameter-area ratio for affine tranformations.

5 votes
2 answers
587 views

Area of a lattice polygon in terms of its width

5 votes
3 answers
2k views

Minimal genus, adjunction inequality

5 votes
2 answers
2k views

Nagata's conjecture, Seshadri constant