HB/lshp1270

SYMMETRIC MATRIX FROM ALAN GEORGE'S L-SHAPE PROBLEMS, 1978.
Name lshp1270
Group HB
Matrix ID 195
Num Rows 1,270
Num Cols 1,270
Nonzeros 8,668
Pattern Entries 8,668
Kind Thermal Problem
Symmetric Yes
Date 1978
Author A. George
Editor I. Duff, R. Grimes, J. Lewis
Structural Rank 1,270
Structural Rank Full true
Num Dmperm Blocks 1
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate yes
Positive Definite no
Type binary
SVD Statistics
Matrix Norm 6.975644e+00
Minimum Singular Value 2.689815e-04
Condition Number 2.593355e+04
Rank 1,270
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
Download Singular Values MATLAB