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196
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Jan
9
answered
Theorems that are 'obvious' but hard to prove
Jan
8
answered
Supervenience in mathematics
Jan
6
answered
Supervenience in mathematics
Jan
2
asked
A geometric Ramsey problem
Jan
1
answered
Examples of undergraduate mathematics separation from what mathematicians should know
Dec
21
answered
Non-linear “Fourier analysis”
Dec
21
answered
Problems where we can't make a canonical choice, solved by looking at all choices at once
Dec
21
answered
Problems where we can't make a canonical choice, solved by looking at all choices at once
Dec
18
answered
A graph with few edges everywhere
Dec
16
answered
Binary operations compatible with the usual order on the reals
Dec
14
answered
Nonexistence of boundary between convergent and divergent series?
Dec
11
answered
Independent families of subsets of $\mathbb N$ of size continuum
Dec
11
answered
Function with range equal to whole reals on every open set
Dec
10
answered
Why are the integers with the cofinite topology not path-connected?
Dec
9
asked
Proofs that require fundamentally new ways of thinking
Dec
7
answered
Borel set plus a closed set = Borel
Dec
2
answered
Is P=NP relevant to finding proofs of everyday mathematical propositions?
Nov
28
answered
Uncountable preimage of every point
Nov
26
asked
Difficult examples for Frankl's union-closed conjecture
Nov
22
answered
Proofs of the uncountability of the reals.
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