james-d-mitchell

james-d-mitchell

james-d-mitchell

#!/usr/bin/env python3


class ToddCoxeter:
    def __init__(self):
        self.nodes = [0]
        self.edges = None
        self.kappa = []
        self.next_node = 1
        self.R = []

james-d-mitchell

#!/bin/bash
set -e

git clone https://github.com/libsemigroups/libsemigroups
cd libsemigroups/extern
curl -L -O https://github.com/fmtlib/fmt/releases/download/5.3.0/fmt-5.3.0.zip
tar -xzf fmt-5.3.0.zip && rm -f fmt-5.3.0.zip
curl -L -O https://github.com/hivert/HPCombi/archive/v0.0.3.zip
tar -xzf v0.0.3.zip && rm -f v0.0.3.zip && mv v0.0.3.zip HPCombi && cd ..

james-d-mitchell

# In GAP 4.9.1 or higher, with the Semigroups package 3.0.16 or higher
LoadPackage("semigroups");

# A function for finding all the subsemigroups of a semigroup 
# (this will only work for extremely small semigroups, due it being a quick implementation, and due to the inherent complexity)

Subsemigroups := function(S)
  local foo, M, N;
  foo := function(M)
    return Unique(Concatenation(List(M, MaximalSubsemigroups)));

james-d-mitchell

"============================================================================
"File:        gaplint.vim
"Description: Syntax checking plugin for syntastic.vim
"Maintainer:  jdm3@st-andrews.ac.uk 
"License:     This program is free software. It comes without any warranty,
"             to the extent permitted by applicable law. You can redistribute
"             it and/or modify it under the terms of the Do What The Fuck You
"             Want To Public License, Version 2, as published by Sam Hocevar.
"             See http://sam.zoy.org/wtfpl/COPYING for more details.
"

james-d-mitchell

# Sieve of Eratosthenes based on code from
# https://en.wikipedia.org/wiki/Sieve_of_Eratosthenes#Pseudocode

MyPrimes := function(n)
  local A, limit, j, i;

  A := BlistList([1 .. n], [2 .. n]);
  limit := Int(Sqrt(Float(n)));
  for i in [1 .. limit] do 
    if A[i] then