Matrix properties
number of rows	7,598
number of columns	7,598
nonzeros	48,762
structural full rank?	yes
structural rank	7,598
# of blocks from dmperm	134
# strongly connected comp.	109
explicit zero entries	160
nonzero pattern symmetry	symmetric
numeric value symmetry	30%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Rajat
editor	T. Davis
date	2004
kind	circuit simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	32,779
Cholesky flop count	1.5e+05
nnz(L+U), no partial pivoting, with AMD	57,960
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	9,385,024
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	26,813,931

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 160 explicit zero entries.

SVD-based statistics:
norm(A)	399999
min(svd(A))	3.36844e-06
cond(A)	1.18749e+11
rank(A)	7,598
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.