JGD_BIBD/bibd_20_10

Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo
Name bibd_20_10
Group JGD_BIBD
Matrix ID 1936
Num Rows 190
Num Cols 184,756
Nonzeros 8,314,020
Pattern Entries 8,314,020
Kind Combinatorial Problem
Symmetric No
Date 2008
Author M. Giesbrecht
Editor J.-G. Dumas
Structural Rank 190
Structural Rank Full true
Num Dmperm Blocks 1
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 0%
Numeric Symmetry 0%
Cholesky Candidate no
Positive Definite no
Type binary
SVD Statistics
Matrix Norm 1.403250e+03
Minimum Singular Value 1.134460e+02
Condition Number 1.236932e+01
Rank 190
sprank(A)-rank(A) 0
Null Space Dimension 0
Full Numerical Rank? yes
Download Singular Values MATLAB
Download MATLAB Rutherford Boeing Matrix Market
Notes 
Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo
From Jean-Guillaume Dumas' Sparse Integer Matrix Collection,            
http://ljk.imag.fr/membres/Jean-Guillaume.Dumas/simc.html               
                                                                        
Filename in JGD collection: BIBD/bibd_20_10_190x184756.sms