OP-00169 Partially resolved Optimal pivot count for RPCholesky trace approximation NA · low-rank approximations · Nyström approximations · OpenProblemsInNLA · pivoted Cholesky factorizations
OP-00179 Partially resolved Sharp gap between volume sampling and the worst matrix with a prescribed spectrum NA · column subset selection · Nyström approximations · OpenProblemsInNLA · volume sampling
OP-00240 Solution claimed Concave-function transfer of spectral low-rank error NA · low-rank approximations · matrix functions · Nyström approximations · OpenProblemsInNLA
OP-00241 Solution claimed Concave-function transfer of Frobenius low-rank error NA · low-rank approximations · matrix functions · Nyström approximations · OpenProblemsInNLA