Matrix properties
number of rows	85,567
number of columns	85,567
nonzeros	419,201
structural full rank?	yes
structural rank	85,567
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	NASA
editor	G. Kumfert, A. Pothen
date	2003
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
coord	full 85567-by-3

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	10,520,808
Cholesky flop count	8.4e+09
nnz(L+U), no partial pivoting, with AMD	20,956,049
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	24,346,428
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	43,546,960

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.