NAME

       nauty-ancestorg - removes a specified number of final vertices

SYNOPSIS

       ancestorg [-q] [-g#:#|-g#] [infile [outfile]]

DESCRIPTION

              The g-th generation ancestor of a graph is the graph obtained by removing

              the  final  g vertices. The 0-th generation ancestor is the graph itself.  For each
              input graph, write the ancestors whose generation is given by the g  argument.   No
              zero-sized graphs are written.  Output is always in graph6 format.

              The output file has a header if and only if the input file does.

       -g# -g#:#
              Specify a generation or range of generations (default: all)

       -q     Suppress auxiliary information