OP-00117 Lean verified Convexity of the expected error of volume-sampled column subsets NA · column subset selection · elementary symmetric polynomials · OpenProblemsInNLA · volume sampling
OP-00175 Partially resolved The Goreinov–Tyrtyshnikov–Zamarashkin conjecture on square-submatrix inverse norms NA · column subset selection · OpenProblemsInNLA · pseudoskeleton approximations
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