Submitted


ortha.m
Orthonormalization Relative to matrix A

mer än 10 år ago | 1 download |

5.0 / 5

Submitted


subspace.m
Angle between subspaces.

mer än 10 år ago | 1 download |

3.7 / 5

Submitted


majorization check
checks if X is (weakly) majorized by Y, where X and Y must be numeric arrays.

mer än 10 år ago | 2 downloads |

0.0 / 5

Submitted


pcg.m with 'null' and 'flex' options
Preconditioned Conjugate Gradients handles homogeneous equations and nonsymmetric preconditioning

mer än 10 år ago | 3 downloads |

4.0 / 5
Thumbnail

Submitted


Best polynomial approximation in uniform norm
For a given function on an interval, the code calculates the min-max approximation by a polynomial.

mer än 10 år ago | 1 download |

0.0 / 5
Thumbnail

Submitted


ODE Tutorial Demo
Advanced examples of using the MATLAB Symbolic Math Toolbox for Ordinary Differential Equations

mer än 10 år ago | 1 download |

0.0 / 5
Thumbnail

Submitted


Newton's method done right
Newton's method for solving systems of nonlinear equations, including nonsquare and inconsistent

mer än 10 år ago | 1 download |

0.0 / 5
Thumbnail

Answered
eigs with sparse matrices
try my http://www.mathworks.com/matlabcentral/fileexchange/48-lobpcg-m instead

mer än 14 år ago | 0

Answered
Memory requirements of lobpcg: Matlab and hypre implementation differences
Have you actually tried the development version of SLEPc? The one that one gets by svn checkout http://www.grycap.upv.es/sle...

mer än 14 år ago | 0

Answered
Memory requirements of lobpcg: Matlab and hypre implementation differences
The development version of SLEPc incorporates BLOPEX now, see http://code.google.com/p/blopex/wiki/PETScInstallDevel so that yo...

mer än 14 år ago | 0

Answered
Memory requirements of lobpcg: Matlab and hypre implementation differences
Please try adding the following options to the ij driver: "-hmis -agg_nl 1 -interptype 6 -Pmx 4" These are proposed by a member ...

mer än 14 år ago | 0

Answered
Memory requirements of lobpcg: Matlab and hypre implementation differences
The lobpcg code in hypre is very similar to the MATLAB code, and uses about the same memory. The BoomerAMG preconditioner requir...

mer än 14 år ago | 0

| accepted

Answered
lobpcg returning incorrect results for large sparse symmetric matrices
Very slow convergence is an expected normal behavior of lobpcg for such a problem, without preconditioning. Unfortunately, I am ...

mer än 14 år ago | 1

| accepted

Submitted


matlab2hypre and hypre2matlab
Read and write files with sparse matrices and vectors in hypre format

mer än 15 år ago | 2 downloads |

5.0 / 5