Matrix properties
number of rows	36,000
number of columns	36,000
nonzeros	14,220,946
structural full rank?	yes
structural rank	36,000
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

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

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	160,627,641
Cholesky flop count	1.0e+12
nnz(L+U), no partial pivoting, with AMD	321,219,282
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	156,052,130
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	315,748,711

Maintained by Tim Davis, last updated 01-Apr-2011.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.