Matrix properties
number of rows	1,020
number of columns	1,020
nonzeros	5,883
structural full rank?	yes
structural rank	1,020
# of blocks from dmperm	157
# strongly connected comp.	114
explicit zero entries	0
nonzero pattern symmetry	44%
numeric value symmetry	37%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Y. Zhou
editor	T. Davis
date	2008
kind	circuit simulation problem
2D/3D problem?	no

Notes:

block size 204*204

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	10,796
Cholesky flop count	1.4e+05
nnz(L+U), no partial pivoting, with AMD	20,572
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	17,570
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	37,329

SVD-based statistics:
norm(A)	6.511
min(svd(A))	2.33595e-09
cond(A)	2.78731e+09
rank(A)	1,020
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.