Matrix properties
number of rows	35,152
number of columns	35,152
nonzeros	764,014
structural full rank?	yes
structural rank	35,152
# of blocks from dmperm	3,533
# strongly connected comp.	61
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	70,123,656
Cholesky flop count	3.6e+11
nnz(L+U), no partial pivoting, with AMD	140,212,160
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	1,660,979
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	3,379,045

SVD-based statistics:
norm(A)	19.913
min(svd(A))	1.10555e-15
cond(A)	1.80118e+16
rank(A)	35,143
sprank(A)-rank(A)	9
null space dimension	9
full numerical rank?	no
singular value gap	5.50102

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.