trisetcmp - Online in the Cloud

PROGRAM:

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.

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