Matrix properties
number of rows	36,057
number of columns	36,057
nonzeros	222,596
structural full rank?	yes
structural rank	36,057
# of blocks from dmperm	3,843
# strongly connected comp.	203
explicit zero entries	5,032
nonzero pattern symmetry	11%
numeric value symmetry	7%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	R. Melville, D. Long
editor	T. Davis
date	2001
kind	frequency-domain circuit simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	4,018,036
Cholesky flop count	1.0e+09
nnz(L+U), no partial pivoting, with AMD	8,000,015
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	488,470
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,065,910

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 5032 explicit zero entries.

SVD-based statistics:
norm(A)	3924.01
min(svd(A))	0.00124
cond(A)	3.16452e+06
rank(A)	36,057
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.