HB/lock3491

FINITE ELEMENT PROBLEM. LOCKHEED CROSS-CONE PROBLEM
Name lock3491
Group HB
Matrix ID 1180
Num Rows 3,491
Num Cols 3,491
Nonzeros 160,444
Pattern Entries 160,444
Kind Structural Problem
Symmetric Yes
Date 1980
Author W. Loden
Editor I. Duff, R. Grimes, J. Lewis
Structural Rank 3,416
Structural Rank Full false
Num Dmperm Blocks 3
Strongly Connect Components 76
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate no
Positive Definite no
Type binary
SVD Statistics
Matrix Norm 5.397936e+01
Minimum Singular Value 8.721631e-128
Condition Number 6.189136e+128
Rank 603
sprank(A)-rank(A) 2,813
Null Space Dimension 2,888
Full Numerical Rank? no
Download Singular Values MATLAB