Matrix properties
number of rows	93,476
number of columns	93,476
nonzeros	1,434,636
structural full rank?	yes
structural rank	93,476
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	82%
type	complex
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	D. Isaak
editor	T. Davis
date	2008
kind	electromagnetics problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	45,901,075
Cholesky flop count	8.1e+10
nnz(L+U), no partial pivoting, with AMD	91,708,674
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	106,834,210
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	201,158,011

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.