Matrix properties
number of rows	1,041
number of columns	1,041
nonzeros	8,725
structural full rank?	yes
structural rank	1,041
# of blocks from dmperm	67
# strongly connected comp.	1
explicit zero entries	917
nonzero pattern symmetry	symmetric
numeric value symmetry	4%
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	6,670
Cholesky flop count	5.1e+04
nnz(L+U), no partial pivoting, with AMD	12,299
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	171,752
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	404,650

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 917 explicit zero entries.

SVD-based statistics:
norm(A)	20921.7
min(svd(A))	0.000127608
cond(A)	1.63953e+08
rank(A)	1,041
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.