Matrix properties
number of rows	42,930
number of columns	42,930
nonzeros	3,148,656
structural full rank?	yes
structural rank	42,930
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	100%
numeric value symmetry	44%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	COMSOL
editor	T. Davis
date	2003
kind	structural problem
2D/3D problem?	yes

Additional fields	size and type
b	full 42930-by-1

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	11,508,740	11,488,992
Cholesky flop count	5.6e+09	5.5e+09
nnz(L+U), no partial pivoting	22,974,550	22,935,054
nnz(V) for QR, upper bound nnz(L) for LU	20,325,633	22,889,490
nnz(R) for QR, upper bound nnz(U) for LU	52,854,984	58,868,820

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.