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You might use the permutation in sage.groups instead of the one in sage.combinat. They can be defined on any domain (at least on recent enough versions of Sage):

sage: S = SymmetricGroup(['a','b','c','d'])
sage: s = S([('a','b'),('c','d')])
sage: s
('a','b')('c','d')
sage: s('a')
'b'

in particular the domain can be {0, ..., v-1}.

Vincent

You might may use the permutation in sage.groups instead of the one in sage.combinat. They can be defined on any domain (at least on recent enough versions of Sage):

sage: S = SymmetricGroup(['a','b','c','d'])
sage: s = S([('a','b'),('c','d')])
sage: s
('a','b')('c','d')
sage: s('a')
'b'

in particular the domain can be {0, ..., v-1}.

Vincent