Matrix properties
number of rows	13,436
number of columns	13,436
nonzeros	71,594
structural full rank?	yes
structural rank	13,436
# of blocks from dmperm	2,545
# strongly connected comp.	1
entries not in dmperm blocks	6,611
explicit zero entries	23,332
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

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

Additional fields	size and type
b	full 13436-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	12,726,035	7,179,122	246,455
Cholesky flop count	4.0e+10	1.0e+10	1.2e+07
nnz(L+U), no partial pivoting	25,438,634	14,344,808	486,085
nnz(V) for QR, upper bound nnz(L) for LU	170,063	196,425	161,659
nnz(R) for QR, upper bound nnz(U) for LU	385,588	430,535	365,771

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 23332 explicit zero entries.

Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.