From a04fea9a0988743da8010855ba2e3bd03c90f791 Mon Sep 17 00:00:00 2001
From: kalmar <kalmar@amu.edu.pl>
Date: Mon, 15 May 2017 09:53:22 +0200
Subject: [PATCH] make perm_autsymbol use PermutationGroup

---
 src/AutGroup.jl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/AutGroup.jl b/src/AutGroup.jl
index c58cce6..7a047ff 100644
--- a/src/AutGroup.jl
+++ b/src/AutGroup.jl
@@ -172,7 +172,8 @@ function change_pow(s::AutSymbol, n::Int)
     if symbol == :ɛ
         return flip_autsymbol(s.ex.args[2], pow=n)
     elseif symbol == :σ
-        return perm_autsymbol(s.ex.args[2], pow=n)
+        G = PermutationGroup(length(s.ex.args[2]))
+        return perm_autsymbol(G(s.ex.args[2]), pow=n)
     elseif symbol == :ϱ
         s.ex.args[2:end-1]
         return rmul_autsymbol(s.ex.args[2:end-1]..., pow=n)