Matrix: CEMW/vfem

Description: Electromagnetics, David Isaak, Computational_EM_Works; vector finite element

CEMW/vfem graph
(undirected graph drawing)


  • Home page of the UF Sparse Matrix Collection
  • Matrix group: CEMW
  • Click here for a description of the CEMW group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups
  • download as a MATLAB mat-file, file size: 11 MB. Use UFget(1900) or UFget('CEMW/vfem') in MATLAB.
  • download in Matrix Market format, file size: 11 MB.
  • download in Rutherford/Boeing format, file size: 10 MB.

    Matrix properties
    number of rows93,476
    number of columns93,476
    structural full rank?yes
    structural rank93,476
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 82%
    Cholesky candidate?no
    positive definite?no

    authorD. Isaak
    editorT. Davis
    kindelectromagnetics problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD45,901,075
    Cholesky flop count8.1e+10
    nnz(L+U), no partial pivoting, with AMD91,708,674
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD106,834,210
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD201,158,011

    For a description of the statistics displayed above, click here.

    Maintained by Tim Davis, last updated 12-Mar-2014.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.