HB/arc130

UNSYMMETRIC MATRIX FROM LASER PROBLEM. A.R.CURTIS, OCT 1974
Name arc130
Group HB
Matrix ID 6

Num Rows

130

Num Cols

130

Nonzeros

1,037

Kind

Materials Problem

Symmetric

No

Date

1974

Author

A. Curtis

Editor

A. Curtis, I. Duff, J. Reid
Structural Rank 130
Structural Rank Full true

Num Dmperm Blocks

55

Strongly Connect Components

55

Num Explicit Zeros

245

Pattern Symmetry

0%

Numeric Symmetry

0%

Cholesky Candidate

no

Positive Definite

no

Type

real
SVD Statistics
Matrix Norm 2.397348e+05
Minimum Singular Value 3.959802e-06
Condition Number 6.054212e+10
Rank 130
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
Download Singular Values MATLAB