[GAP Forum] Converting a permutation to a list

[Pierre-Alain BOURDIL]

Greetings,

i'm looking for a function , say F, such that

  F((1,2,3)(5,6)) = [[1,2,3],[5,6]].

My goal is to use the output list as index to fetch string from a 
separate list (eg: ["a","b","c","d","e"]). I need to express 
permutation  on the latter (eg: ("a","b","c")("d","e")) ) , do some 
computation using gap permutation group, and  convert back the output of 
gap to permutation of these strings.

I've seen PermList and ListPerm but it's not a cyclic notation. There's 
possibly better way to make a permutation acting on an ordred set of 
string  but my point is the input/output with gap.

-- 
Pierre-Alain BOURDIL
pabourdi at laas.fr <mailto:pabourdi at laas.fr>
pierre-alain.bourdil at fr.thalesgroup.com 
<mailto:pierre-alain.bourdil at fr.thalesgroup.com>