Matrix properties
number of rows	10,429
number of columns	10,429
nonzeros	103,599
structural full rank?	yes
structural rank	10,429
# 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	NASA
editor	G. Kumfert, A. Pothen
date	1995
kind	duplicate structural problem
2D/3D problem?	yes

Notes:

Identical to Pothen/shuttle_eddy; the latter has xyz coordinates.

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	326,936	363,205
Cholesky flop count	1.7e+07	2.2e+07
nnz(L+U), no partial pivoting	643,443	715,981
nnz(V) for QR, upper bound nnz(L) for LU	566,762	563,033
nnz(R) for QR, upper bound nnz(U) for LU	1,108,728	1,094,069

Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.