Hello all,
Running into an issue with something. I must be missing something. Say I
construct two groups that I know are isomorphic.
sage: G = SymmetricGroup(5)
sage: r = G('(1,2,5,4,3)')
sage: s = G('(1,5),(3,4)')
sage: H = G.subgroup([r,s])
sage: H
Subgroup of SymmetricGroup(5) generated by [(1,2,5,4,3), (1,5)(3,4)]
sage: D = DihedralGroup(5)
sage: D
Dihedral group of order 10 as a permutation group
I get an TypeError when I try and construct a homomorphism between these two
groups.
sage: phi = D.hom( ['(1,2,5,4,3)', '(1,5)(3,4)'] , H)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/Users/ayeq/Dropbox/src/sdsu-sage-tutorial/<ipython console> in <module>()
/Users/ayeq/sage/local/lib/python2.6/site-packages/sage/structure/parent_gens.so
in sage.structure.parent_gens.ParentWithGens.hom
(sage/structure/parent_gens.c:3858)()
/Users/ayeq/sage/local/lib/python2.6/site-packages/sage/categories/homset.pyc
in __call__(self, x, y, check, on_basis)
432 return self.element_class_set_morphism(self, x)
433
--> 434 raise TypeError, "Unable to coerce x (=%s) to a morphism in
%s"%(x,self)
435
436 @lazy_attribute
TypeError: Unable to coerce x (=['(1,2,5,4,3)', '(1,5)(3,4)']) to a morphism
in Set of Morphisms from Dihedral group of order 10 as a permutation group
to Subgroup of SymmetricGroup(5) generated by [(1,2,5,4,3), (1,5)(3,4)] in
Category of finite permutation groups
I have tried to do this in a few different ways. (by coercing the elements
first, etc...) Can somebody see what I am missing? Thank you in advance.
--
D. M. Monarres
<dmmonar...@gmail.com>
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