27985: Dynatomic polynomial base field coercion

Removed an unnecessary change that might break other cases.
sagemath · Jun 13, 2019 · a59231a · a59231a
1 parent fa912d4
commit a59231a
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/src/sage/dynamics/arithmetic_dynamics/affine_ds.py b/src/sage/dynamics/arithmetic_dynamics/affine_ds.py
@@ -539,7 +539,6 @@ def dynatomic_polynomial(self, period):
             phi = R.hom([S.gen(0), 1], S)
             return phi(F)
         else:
-            S = S.change_ring(F.base_ring())
             R = F.numerator().parent()
             phi = R.hom([S.gen(0), 1], S)
             return phi(F.numerator())/phi(F.denominator())