Schenk: IBM TJ Watson, Yorktown, nonlinear optimization
Name c-58
Group GHS_indef
Matrix ID 1221
Num Rows 37,595
Num Cols 37,595
Nonzeros 552,551
Pattern Entries 552,557
Kind Optimization Problem
Symmetric Yes
Date 2004
Author IBM
Editor O. Schenk
Structural Rank 37,595
Structural Rank Full true
Num Dmperm Blocks 4
Strongly Connect Components 4
Num Explicit Zeros 6
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate no
Positive Definite no
Type real
SVD Statistics
Matrix Norm 5.415471e+04
Minimum Singular Value 1.619823e-03
Condition Number 3.343249e+07
Rank 37,595
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
Download Singular Values MATLAB
Download MATLAB Rutherford Boeing Matrix Market
Revised Nov 2006; relative eps changes to A, right-hand-side added.
Note that this matrix should have been placed in the Schenk_IBMNA/ 
directory when it was first added in August 2004, but moving it now
would disrupt exising users of the collection.