15

Answers
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5
Examples where adding complexity made a problem simpler
2
A question about the Axiom of Choice and straight lines in the Euclidean plane.
0
The half-life of a theorem, or Arnold’s principle at work
4
What grows faster?
2
Homeomorphism of the rationals
0
integrating 1/(x*sin(1/x))
1
Cantor theorem on orders
3
Computational complexity of calculating the nth root of a real number
11
Is the sum sin(n) bounded?
1
Faa di Bruno’s formula for inverse functions ?
0
The problem of finding the first digit in Graham’s number
2
Examples of interesting false proofs
7
How large is TREE(3) ?
2
When does iterating z -> z^2 + c have an exact solution?
4
Stirling Number of first kind : Implementation