Jérôme JEAN-CHARLES's user avatar
Jérôme JEAN-CHARLES's user avatar
Jérôme JEAN-CHARLES's user avatar
Jérôme JEAN-CHARLES
  • Member for 14 years, 2 months
  • Last seen this week
  • Paris France
52 votes
3 answers
5k views

Is the "Napkin conjecture" open? (origami)

10 votes
1 answer
873 views

Which finite groups are not the automorphism group of some rooted finite tree?

7 votes
1 answer
4k views

Who is this guy : Z.A. Melzak (wrote Companion to Concrete Mathematics) ? [closed]

6 votes
2 answers
661 views

Can knowing ahead the length of 3-SAT instance really help?

3 votes
1 answer
2k views

A mathematical idea "abstract enough to be useless for physics"

3 votes
4 answers
628 views

3 directions of infinity ?

3 votes
2 answers
231 views

Enumerating 0-1 finite boxes without null rays.

3 votes
2 answers
122 views

For $n$ different sets whose union has size $n+1$ ,can you remove the same point from each set while retaining their difference

2 votes
4 answers
4k views

Theorems true but wrong. [closed]

2 votes
1 answer
1k views

Convergence of a general Bertrand series

2 votes
1 answer
214 views

Possible semantics for categorical co-constness

1 vote
1 answer
476 views

Is there a conjunction bias?

1 vote
0 answers
270 views

Functional equation $f(x*y) = f(f(x)*f(y))$

0 votes
2 answers
715 views

Statements going against the grain of Riemann Hypothesis (R.H.) [closed]