Matrix properties
number of rows	456,976
number of columns	456,976
nonzeros	11,330,020
structural full rank?	yes
structural rank	456,976
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	100%
numeric value symmetry	0%
type	complex
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	W. Kim
editor	T. Davis
date	2002
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	90,651,946	82,983,536
Cholesky flop count	7.9e+10	5.8e+10
nnz(L+U), no partial pivoting	180,846,916	165,510,096
nnz(V) for QR, upper bound nnz(L) for LU	161,940,014	136,091,076
nnz(R) for QR, upper bound nnz(U) for LU	311,798,326	256,304,422

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.