Iterative linear solvers operating on K_k(A, b) = span{b, Ab, A²b, …, A^{k−1}b}: GMRES (non-symmetric), CG (SPD), MINRES (symmetric indefinite), BiCGSTAB. Only matrix-vector products needed.
Iterative linear solvers operating on K_k(A, b) = span{b, Ab, A²b, …, A^{k−1}b}: GMRES (non-symmetric), CG (SPD), MINRES (symmetric indefinite), BiCGSTAB. Only matrix-vector products needed.