Matrix properties
number of rows	3,072
number of columns	3,072
nonzeros	119,808
structural full rank?	yes
structural rank	3,072
# of blocks from dmperm	2
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	92%
numeric value symmetry	46%
type	complex
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	B. Medeke
editor	R. Boisvert, R. Pozo, K. Remington, B. Miller, R. Lipman, R. Barrett, J. Dongarra
date	1999
kind	theoretical/quantum chemistry problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	1,015,776	1,135,146	557,016
Cholesky flop count	7.8e+08	8.9e+08	1.9e+08
nnz(L+U), no partial pivoting	2,028,480	2,267,220	1,110,960
nnz(V) for QR, upper bound nnz(L) for LU	1,047,318	1,169,673	1,288,320
nnz(R) for QR, upper bound nnz(U) for LU	1,789,278	1,782,879	1,755,168

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.