Matrix properties
number of rows	2,954
number of columns	2,954
nonzeros	36,875
structural full rank?	yes
structural rank	2,954
# of blocks from dmperm	596
# strongly connected comp.	42
entries not in dmperm blocks	4,411
explicit zero entries	331
nonzero pattern symmetry	1%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Mallya
editor	T. Davis
date	1994
kind	chemical process simulation problem
2D/3D problem?	no

Additional fields	size and type
b	full 2954-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	542,379	389,325	79,666
Cholesky flop count	2.2e+08	9.4e+07	4.5e+06
nnz(L+U), no partial pivoting	1,081,804	775,696	160,789
nnz(V) for QR, upper bound nnz(L) for LU	68,457	91,320	49,748
nnz(R) for QR, upper bound nnz(U) for LU	154,847	193,390	108,799

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 331 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.