From 9570b8c84a0ba5dededbde11848e27831523dc61 Mon Sep 17 00:00:00 2001
From: kalmar <kalmar@amu.edu.pl>
Date: Thu, 11 May 2017 18:27:05 +0200
Subject: [PATCH] remove unused

---
 src/FPGroups.jl | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/src/FPGroups.jl b/src/FPGroups.jl
index 641789b..d63e219 100644
--- a/src/FPGroups.jl
+++ b/src/FPGroups.jl
@@ -88,20 +88,13 @@ function (==)(s::FPSymbol, t::FPSymbol)
 end
 
 
+inv(s::FPSymbol) = change_pow(s, -s.pow)
 
 
 FreeGroup(n::Int, f::String=f) = FPGroup(["$f$i" for i in 1:n])
-inv(s::FPSymbol) = change_pow(s, -s.pow)
 
 FreeGroup(a::Vector{String}) = FPGroup(a)
-function add_rel!{T<:FPSymbol}(G::FPGroup, w::GWord{T})
-    if !(w in G.rels)
-        push!(G.rels, w)
-    end
-    return G
-end
 
-end #of module FinitelyPresentedGroups
 # function add_rel!{T<:FPSymbol}(G::FPGroup, w::GWord{T})
 #    if !(w in G.rels)
 #       w = G(w)