コード例 #1
0
    def group_generators(self):
        """
        Return the group generators of ``self``.

        EXAMPLES::

            sage: G = Groups.free(index_set=ZZ)
            sage: G.group_generators()
            Lazy family (Generator map from Integer Ring to
             Free group indexed by Integer Ring(i))_{i in Integer Ring}
            sage: G = Groups().free(index_set='abcde')
            sage: sorted(G.group_generators())
            [F['a'], F['b'], F['c'], F['d'], F['e']]
        """
        if self._indices.cardinality() == infinity:
            gen = PoorManMap(self.gen, domain=self._indices, codomain=self, name="Generator map")
            return Family(self._indices, gen)
        return Family(self._indices, self.gen)
コード例 #2
0
    def monoid_generators(self):
        """
        Return the monoid generators of ``self``.

        EXAMPLES::

            sage: F = FreeAbelianMonoid(index_set=ZZ)
            sage: F.monoid_generators()
            Lazy family (Generator map from Integer Ring to
             Free abelian monoid indexed by Integer Ring(i))_{i in Integer Ring}
            sage: F = FreeAbelianMonoid(index_set=tuple('abcde'))
            sage: sorted(F.monoid_generators())
            [F['a'], F['b'], F['c'], F['d'], F['e']]
        """
        if self._indices.cardinality() == infinity:
            gen = PoorManMap(self.gen, domain=self._indices, codomain=self, name="Generator map")
            return Family(self._indices, gen)
        return Family(self._indices, self.gen)