Oberwolfach/windscreen

Oberwolfach: car windscreen
Name windscreen
Group Oberwolfach
Matrix ID 1452
Num Rows 22,692
Num Cols 22,692
Nonzeros 1,482,390
Pattern Entries 1,482,390
Kind Model Reduction Problem
Symmetric Yes
Date 2004
Author K. Meerbergen
Editor E. Rudnyi
Structural Rank 22,692
Structural Rank Full true
Num Dmperm Blocks 1
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type complex
SVD Statistics
Matrix Norm 1.887078e+11
Minimum Singular Value 1.778172e-07
Condition Number 1.061246e+18
Rank 22,686
sprank(A)-rank(A) 6
Null Space Dimension 6
Full Numerical Rank? no
Download Singular Values MATLAB
Download MATLAB Rutherford Boeing Matrix Market
Notes
Primary matrix in this model reduction problem is the Oberwolfach K matrix