set_alphabet(std::string const&)ΒΆ

void libsemigroups::FpSemigroupInterface::set_alphabet(std::string const &a)

Set the alphabet of the finitely presented semigroup.

Return

(None)

Complexity

Constant.

See

alphabet() and set_alphabet(size_t).

Parameters

  • a: the alphabet.

Exceptions

  • LibsemigroupsException: If the alphabet has already ! been set to another value, the parameter a is empty, or there are ! repeated characters in a.