Matrix properties
number of rows	1,960
number of columns	1,960
nonzeros	11,187
structural full rank?	yes
structural rank	1,960
# of blocks from dmperm	58
# strongly connected comp.	10
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
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	8,074
Cholesky flop count	3.6e+04
nnz(L+U), no partial pivoting, with AMD	14,188
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	204,210
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	520,502

SVD-based statistics:
norm(A)	25.8645
min(svd(A))	7.48673e-26
cond(A)	3.45471e+26
rank(A)	1,508
sprank(A)-rank(A)	452
null space dimension	452
full numerical rank?	no
singular value gap	1.26826e+12

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.