33

Questions

15
31
votes
10
answers
4k
views

The functional equation $f(f(x))=x+f(x)^2$

apr 8 12 at 3:50 Sylvain Bonnot 560145

10
23
votes
1
answer
1k
views

A puzzle about finding three points $(x,y)$, $(x,z)$ and $(y,z)$ in a subset of a square.

mar 8 11 at 10:41 Pietro Majer 19.8k12570

9
21
votes
4
answers
932
views

Asymptotic growth of a certain integer sequence

jan 23 at 13:06 Pietro Majer 19.8k12570

8
20
votes
6
answers
1k
views

I know that you know…

may 25 at 11:48 patty 12

12
17
votes
4
answers
2k
views

Genealogy of the Lagrange inversion theorem

may 23 10 at 1:47 Scott Guthery 65937

11
15
votes
2
answers
917
views

Integral representation of higher order derivatives

mar 25 at 19:37 Peter Michor 6,36111520

3
13
votes
1
answer
689
views

Banach spaces with few linear operators ?

jul 5 10 at 20:26 Yemon Choi 8,60812045

2
13
votes
0
answers
418
views

Closed connected additive subgroups of the Hilbert space.

oct 18 11 at 10:15 Pietro Majer 19.8k12570

2
12
votes
1
answer
519
views

Intersection of complemented subspaces of a Banach space

jan 13 12 at 13:17 Pietro Majer 19.8k12570

1
12
votes
0
answers
785
views

Infinite convex combinations in a Banach space

feb 22 11 at 12:17 Pietro Majer 19.8k12570

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