Matrix properties
number of rows	5,860
number of columns	5,860
nonzeros	25,258
structural full rank?	yes
structural rank	5,860
# of blocks from dmperm	1,412
# strongly connected comp.	1,318
explicit zero entries	21,584
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	F. Grund
editor	F. Grund
date	1997
kind	circuit simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	21,670
Cholesky flop count	1.2e+05
nnz(L+U), no partial pivoting, with AMD	37,480
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,204,046
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	2,114,787

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 21584 explicit zero entries.

SVD-based statistics:
norm(A)	212573
min(svd(A))	5.07099e-06
cond(A)	4.19194e+10
rank(A)	5,860
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.