Matrix properties
number of rows	2,398
number of columns	2,398
nonzeros	61,896
structural full rank?	yes
structural rank	2,398
# of blocks from dmperm	99
# strongly connected comp.	2
explicit zero entries	0
nonzero pattern symmetry	14%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	S. Zitney
editor	T. Davis
date	1992
kind	chemical process simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	429,153
Cholesky flop count	1.3e+08
nnz(L+U), no partial pivoting, with AMD	855,908
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	92,347
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	161,854

SVD-based statistics:
norm(A)	1144.23
min(svd(A))	7.09923e-05
cond(A)	1.61176e+07
rank(A)	2,398
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.