JGD_BIBD/bibd_19_9

Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo
Name bibd_19_9
Group JGD_BIBD
Matrix ID 1935
Num Rows 171
Num Cols 92,378
Nonzeros 3,325,608
Pattern Entries 3,325,608
Kind Combinatorial Problem
Symmetric No
Date 2008
Author M. Giesbrecht
Editor J.-G. Dumas
Structural Rank 171
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 8.367365e+02
Minimum Singular Value 8.021845e+01
Condition Number 1.043072e+01
Rank 171
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_19_9_171x92378.sms