Matrix properties
number of rows	153,746
number of columns	153,746
nonzeros	9,080,404
structural full rank?	yes
structural rank	153,746
# of blocks from dmperm	6
# strongly connected comp.	6
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	E. Rothberg
editor	T. Davis
date	1997
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	48,554,746
Cholesky flop count	4.7e+10
nnz(L+U), no partial pivoting, with AMD	96,955,746
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	123,789,043
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	244,956,446

Maintained by Tim Davis, last updated 01-Apr-2011.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.