Matrix properties
number of rows	10,964
number of columns	10,964
nonzeros	231,806
structural full rank?	yes
structural rank	10,964
# of blocks from dmperm	1,200
# strongly connected comp.	31
entries not in dmperm blocks	14,924
explicit zero entries	1,935
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 10964-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	12,384,800	9,393,601	548,483
Cholesky flop count	3.6e+10	1.6e+10	4.6e+07
nnz(L+U), no partial pivoting	24,758,636	18,776,238	1,100,926
nnz(V) for QR, upper bound nnz(L) for LU	411,929	557,200	323,454
nnz(R) for QR, upper bound nnz(U) for LU	964,310	1,191,719	730,746

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1935 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.