Apparently, this user prefers to keep an air of mystery about them.
22 Splitting a sandwich and not feeling deceived jan 14 '14
6 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
4 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