Matrix properties
number of rows	17,576
number of columns	17,576
nonzeros	381,975
structural full rank?	yes
structural rank	17,576
# of blocks from dmperm	1,798
# strongly connected comp.	31
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Mallya
editor	T. Davis
date	1997
kind	chemical process simulation problem
2D/3D problem?	no

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	33,835,914
Cholesky flop count	1.7e+11
nnz(L+U), no partial pivoting, with AMD	67,654,252
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	802,005
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,644,883

SVD-based statistics:
norm(A)	19.913
min(svd(A))	5.17884e-14
cond(A)	3.84507e+14
rank(A)	17,572
sprank(A)-rank(A)	4
null space dimension	4
full numerical rank?	no
singular value gap	2.43665

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.