triangulations/scripts/README.md

Scripts to filter out unique minimal triangulaitons

These scripts dig through directories to find triangulations, take the minimal ones, remove duplicates, and then export them, sorted by PL-type.

Prerequisites

• Polymake
• PostgreSQL
• GNU Parallel

How to use:

Create the database tables

CREATE TABLE triangulations (signature varchar, f_vector varchar, vertices integer, path varchar);
CREATE TABLE minimal_triangulations (signature varchar, f_vector varchar, vertices integer, path varchar);

Populate the triangulations table

find ~ -name *.poly -not -path "*comb_iso_classes*" -not -path "*flat*" | parallel --progress ./triangulation_bookkeeping.pl {}

Populate the minimal triangulations (by vertices) table by finding the minimum triangulation for each signature

INSERT INTO minimal_triangulations SELECT DISTINCT ON (signature) * FROM triangulations ORDER BY signature, vertices;

Remove combinatorially isomorphic triangulations by running triangulation_bookkeeping_minimal.pl, and output sorted by type using triangulation_bookkeeping_output.pl