Mycielski/mycielskian8

Mycielskian graph M8
Name mycielskian8
Group Mycielski
Matrix ID 2764
Num Rows 191
Num Cols 191
Nonzeros 4,720
Pattern Entries 4,720
Kind Undirected Graph
Symmetric Yes
Date 2018
Author J. Mycielski
Editor S. Kolodziej
Structural Rank
Structural Rank Full
Num Dmperm Blocks
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate no
Positive Definite no
Type binary
Download MATLAB Rutherford Boeing Matrix Market
Notes
Mycielskian graph M8.                                                   
                                                                        
The Mycielskian graph sequence generates graphs that are triangle-free  
and with a known chromatic number (i.e. the minimum number of colors    
required to color the vertices of the graph).                           
                                                                        
Known properties of this graph (M8) include the following:              
                                                                        
 * M8 has a minimum chromatic number of 8.                              
 * M8 is triangle-free (i.e. no cycles of length 3 exist).              
 * M8 has a Hamiltonian cycle.                                          
 * M8 has a clique number of 2.                                         
 * M8 is factor-critical, meaning every subgraph of |V|-1 vertices has  
   a perfect matching.                                                  
                                                                        
Mycielski graphs were first described by Jan Mycielski in the following 
publication:                                                            
                                                                        
    Mycielski, J., 1955. Sur le coloriage des graphes. Colloq. Math.,   
    3: 161-162.