1NAUTY-GENBGL(1) Nauty Manual NAUTY-GENBGL(1)
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6 nauty-genbgL - generate small bicoloured graphs (L1 flavour)
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9 genbg [-c -ugs -vq -lzF] [-Z#] [-D#] [-A] [-d#|-d#:#] [-D#|-D#:#] n1 n2
10 [mine[:maxe]] [res/mod] [file]
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13 Find all bicoloured graphs of a specified class.
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15 n1 : the number of vertices in the first class
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17 n2 : the number of vertices in the second class
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19 mine:maxe : a range for the number of edges
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21 #:0 means '# or more' except in the case 0:0
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23 res/mod : only generate subset res out of subsets 0..mod-1
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25 file : the name of the output file (default stdout)
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27 -c : only write connected graphs
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29 -z : all the vertices in the second class must have
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31 different neighbourhoods
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33 -F : the vertices in the second class must have at least two
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35 neighbours of degree at least 2
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37 -L : there is no vertex in the first class whose removal leaves
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39 the vertices in the second class unreachable from each other
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41 -Y# : two vertices in the second class must have at least # common
42 nbrs
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44 -Z# : two vertices in the second class must have at most # common
45 nbrs
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47 -A : no vertex in the second class has a neighbourhood which is a
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49 subset of another vertex's neighbourhood in the second class
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51 -D# : specify an upper bound for the maximum degree
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53 Example: -D6.
54 You can also give separate maxima for the
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56 two parts, for example: -D5:6
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58 -d# : specify a lower bound for the minimum degree.
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60 Again, you can specify it separately for the two parts: -d1:2
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62 -g : use graph6 format for output (default)
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64 -s : use sparse6 format for output
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66 -a : use Greechie diagram format for output
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68 -u : do not output any graphs, just generate and count them
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70 -v : display counts by number of edges to stderr
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72 -l : canonically label output graphs (using the 2-part colouring)
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74 -q : suppress auxiliary output
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76 See program text for much more information.
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80nauty 2.8.8 November 2023 NAUTY-GENBGL(1)