14

Answers
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2
Proofs without words
0
Awfully sophisticated proof for simple facts
0
Theorems that are ‘obvious’ but hard to prove
6
Colloquial catchy statements encoding serious mathematics
4
Most ‘unintuitive’ application of the Axiom of Choice? (2)
1
Interesting Calculus Questions/Exercises
10
What are some mathematical concepts that were (pretty much) created from scratch and do not owe a debt to previous work?
6
Does the fact that this vector space is not isomorphic to its double-dual require choice?
13
What are some proofs of Godel’s Theorem which are *essentially different* from the original proof?
8
How is the Ising model an example of a lattice model as per Kontsevich?
3
Intersection Probabilities for Random Walk in d>2
2
Continuous Measurement in Quantum Mechanics
1
Improved versions of discontinuous functions
3
Questions regarding “second and higher-order-undecidability”