Matrix properties
number of rows	36,057
number of columns	36,057
nonzeros	335,552
structural full rank?	yes
structural rank	36,057
# of blocks from dmperm	3,843
# strongly connected comp.	203
explicit zero entries	5,536
nonzero pattern symmetry	7%
numeric value symmetry	4%
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	9,939,829
Cholesky flop count	7.3e+09
nnz(L+U), no partial pivoting, with AMD	19,843,601
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	2,291,021
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	4,272,298

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 5536 explicit zero entries.

SVD-based statistics:
norm(A)	3924.01
min(svd(A))	0.000417944
cond(A)	9.38885e+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.