Matrix properties
number of rows	11,532
number of columns	11,532
nonzeros	551,184
structural full rank?	yes
structural rank	11,532
# of blocks from dmperm	653
# strongly connected comp.	1
entries not in dmperm blocks	23,966
explicit zero entries	17,342
nonzero pattern symmetry	1%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	M. Hohn
editor	T. Davis
date	2003
kind	materials problem
2D/3D problem?	yes

Additional fields	size and type
b	full 11532-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	8,658,431	6,152,054	9,186,855
Cholesky flop count	1.8e+10	7.2e+09	1.4e+10
nnz(L+U), no partial pivoting	17,305,330	12,292,576	18,386,144
nnz(V) for QR, upper bound nnz(L) for LU	20,541,699	10,421,976	8,058,261
nnz(R) for QR, upper bound nnz(U) for LU	33,047,978	21,952,277	20,274,422

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 17342 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.