Matrix properties
number of rows	213,453
number of columns	213,453
nonzeros	11,985,111
structural full rank?	yes
structural rank	213,453
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	C. Damhaug
editor	N. Gould, Y. Hu, J. Scott
date	2004
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	91,897,326	64,791,897
Cholesky flop count	1.6e+11	5.7e+10
nnz(L+U), no partial pivoting	183,581,199	129,370,341
nnz(V) for QR, upper bound nnz(L) for LU	245,556,264	137,136,825
nnz(R) for QR, upper bound nnz(U) for LU	464,144,670	256,992,516

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.