Y. Saad, Krylov Subspace Methods for Solving Large Unsymmetric Linear Systems, Mathematics of Computation, Vol. 37, No. 155 (Jul., 1981), pp. 105-126 ...

, Juan J. Font, Linear Isometries Between Subspaces of Continuous Functions, Transactions of the American Mathematical Society, Vol. 349, No. 1 (Jan., 1997), pp. 413-428 ...

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 ...