Ali Jafarian, Alexey I. Popov, Heydar Radjavi, Common Invariant Subspaces from Small Commutators, Indiana University Mathematics Journal, Vol. 67, No. 1 (2018), pp ...

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 ...

Given a vector space V of homogeneous polynomials of the same degree over an infinite field, consider a generic subspace W of V. The main result of this paper is a lower-bound (in general sharp) for ...