Matrix properties
number of rows	1,157
number of columns	1,157
nonzeros	3,699
structural full rank?	yes
structural rank	1,157
# of blocks from dmperm	734
# strongly connected comp.	166
explicit zero entries	1,700
nonzero pattern symmetry	90%
numeric value symmetry	92%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Rajat
editor	T. Davis
date	2006
kind	circuit simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	2,836
Cholesky flop count	7.5e+03
nnz(L+U), no partial pivoting, with AMD	4,515
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	23,069
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	55,406

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1700 explicit zero entries.

SVD-based statistics:
norm(A)	10.9106
min(svd(A))	1e-09
cond(A)	1.09106e+10
rank(A)	1,157
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.