genbg(1)
[mine[:maxe]] [res/mod] [file]
SYNOPSIS
genbg
[-c -ugsn -vq -lzF] [-Z#] [-d#|-d#:#] [-D#|-D#:#] n1 n2
DESCRIPTION
-
[mine[:maxe]] [res/mod] [file]
-
Find all bicoloured graphs of a specified class.
- n1
-
: the number of vertices in the first class
- n2
-
: the number of vertices in the second class
-
mine:maxe : a range for the number of edges
-
#:0 means '# or more' except in the case 0:0
-
res/mod : only generate subset res out of subsets 0..mod-1
-
file : the name of the output file (default stdout)
- -c
-
: only write connected graphs
- -z
-
: all the vertices in the second class must have
-
different neighbourhoods
- -F
-
: the vertices in the second class must have at least two
-
neighbours of degree at least 2
- -L
-
: there is no vertex in the first class whose removal leaves
-
the vertices in the second class unreachable from each other
- -Z#
-
: two vertices in the second class may have at most # common nbrs
- -D#
-
: specify an upper bound for the maximum degree.
- Example: -D6.
-
You can also give separate maxima for the
-
two parts, for example: -D5:6
- -d#
-
: specify a lower bound for the minimum degree.
-
Again, you can specify it separately for the two parts: -d1:2
- -n
-
: use nauty format for output
- -g
-
: use graph6 format for output (default)
- -s
-
: use sparse6 format for output
- -a
-
: use Greechie diagram format for output
- -u
-
: do not output any graphs, just generate and count them
- -v
-
: display counts by number of edges to stderr
- -l
-
: canonically label output graphs (using the 2-part colouring)
- -q
-
: suppress auxiliary output
-
See program text for much more information.