Apparently, this user prefers to keep an air of mystery about them.
24 Splitting a sandwich and not feeling deceived Jan 14 '14
7 If $f$ is Lebesgue integrable on $[0,2]$ and $\int_E fdx=0$ for all measurable set E such that $m(E)=\pi/2$. Prove or disprove that $f=0$ a.e. Jan 26 '14
5 Is it really unknown that every endomorphism of the Weyl algebra $A_1$ is an isomorphism? Feb 1 '14
4 Closed invariant subspace problem Jan 30 '14