Has a mathematician solved the 'invariant subspace problem'? And what does that even mean?
Monday, June 12, 2023 - 12:43
in Mathematics & Economics
Two weeks ago, a modest-looking paper was uploaded to the arXiv preprint server with the unassuming title "On the invariant subspace problem in Hilbert spaces." The paper is just 13 pages long and its list of references contains only a single entry.