# nauty-addptg - Man Page

add additional vertices in various ways

## Synopsis

**addptg** [*-lq*] [*-n#*] [*-j#:#*] [*-e#:#*] [*-ck*] [*-io*] [*infile* [*outfile*]]

## Description

Add a specified number of new vertices

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

- -l
canonically label outputs

- -c
join each new vertex to all the old vertices

- -k
make a clique on the set of new vertices

**-n**# the number of new vertices (default 1)

**-j**# **-j**#:# join a new vertex to # old vertices in all possible ways

**-e**# **-e**#:# use all joins that give the new graphs # edges

(**-j**, **-e** are each incompatible with **-n**)

## Info

January 2024 nauty 2.8.8 Nauty Manual