NAME

       trisetcmp - Compare triangulations between two Regina data files

SYNOPSIS

       trisetcmp [ -m | -n ] [ -s ] file1 file2

DESCRIPTION

       Compares  all  triangulations  in  the first file against all triangulations in the second
       file, looking for pairs of triangulations that are combinatorially isomorphic.

       The two given files must be Regina data files.  A full list of matches (or a full list  of
       non-matches  if  -n  is  passed)  is written to standard output.  A match occurs when some
       triangulation from file1 is combinatorially isomorphic to some  triangulation  from  file2
       (i.e., identical up to a relabelling of tetrahedra and their vertices).

       This  utility can also do subcomplex testing instead of full isomorphism testing.  See the
       option -s for details.

OPTIONS

       -m (default)
              Output matches only.  All isomorphic matches between triangulations  in  file1  and
              triangulations in file2 will be listed.

       -n     Output non-matches only.  All triangulations from file1 with no isomorphic match in
              file2 will be listed, and vice versa.

              If -s is passed then non-matches are tested in one direction only,  not  both;  see
              below for details.

       -s     Instead  of  testing triangulations for isomorphism, test whether one triangulation
              is isomorphic to a subcomplex of the other.

              In the default case of -m (output matches only), this program outputs all instances
              where  a  triangulation from file1 is isomorphic to a subcomplex of a triangulation
              from file2.

              In  the  case  of  -n  (output  non-matches  only),  this   program   outputs   all
              triangulations  from  file1  that  are  not  isomorphic  to  a  subcomplex  of  any
              triangulation from file2.

INTERNATIONALISATION

       If any packets contain international characters, Regina will attempt to convert  these  to
       your local character encoding as it writes them to the output.

       You  can  tell  Regina  what  character encoding to use by setting standard locale-related
       environment variables, such as LANG, LC_CTYPE or LC_ALL.

       For example, if LANG is set to en_AU then output will be written in the  Western  European
       character set ISO-8859-1, and if LANG is set to en_AU.UTF-8 then output will be written in
       the universal character set UTF-8.

       Typically these environment variables will already be set for you when  you  install  your
       GNU/Linux  system,  and  Regina will just use the right character set out of the box.  See
       your GNU/Linux system reference for further information on supporting different locales.

MACOS X USERS

       If you downloaded a drag-and-drop app bundle, this utility is shipped inside it.   If  you
       dragged    Regina    to    the   main   Applications   folder,   you   can   run   it   as
       /Applications/Regina.app/Contents/MacOS/trisetcmp.

WINDOWS USERS

       The command-line utilities are installed beneath the  Program  Files  directory;  on  some
       machines  this  directory  is  called  Program Files (x86).  You can start this utility by
       running c:\Program Files\Regina\Regina 4.96\bin\trisetcmp.exe.

SEE ALSO

       censuslookup, regina-gui.

AUTHOR

       This utility was written by Benjamin  Burton  <bab@debian.org>.   Many  people  have  been
       involved in the development of Regina; see the users' handbook for a full list of credits.

                                          23 August 2014                             TRISETCMP(1)