clopen.solutions

Open problems

980 registered problems.

OP-00191 Open
RILU conditioning for the Neumann problem on smooth planar domains
NA · condition numbers · incomplete factorizations · OpenProblemsInNLA · preconditioners
OP-00192 Open
Perturbed MILU conditioning for Neumann problems in two and three dimensions
NA · condition numbers · incomplete LU factorizations · OpenProblemsInNLA · preconditioners
OP-00193 Partially resolved
Spectral disk for a Radau stage preconditioner
NA · eigenvalue bounds · OpenProblemsInNLA · preconditioners · Runge–Kutta methods
OP-00194 Partially resolved
Positive diagonal preconditioning with a nilpotent stiff limit
NA · collocation methods · diagonal preconditioners · OpenProblemsInNLA · Runge–Kutta methods
OP-00398 Partially resolved
Uniformly effective algebraic multigrid for diagonally dominant systems
NA · AIM Open Applied Problems · algebraic multigrid · diagonally dominant matrices · preconditioners