X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=mjo%2Feja%2Feja_element_subalgebra.py;h=cff8b4e8bbc8e1f2119061ca5a5bb84842393a03;hb=12178d0b2943c4fe22c34c57171c794bec6a853a;hp=7fbd0609d9578406cb3ce9a8683fc6e46c8a95e4;hpb=2ce97eef3264e148f8a394c18b50db99d4619999;p=sage.d.git

diff --git a/mjo/eja/eja_element_subalgebra.py b/mjo/eja/eja_element_subalgebra.py
index 7fbd060..cff8b4e 100644
--- a/mjo/eja/eja_element_subalgebra.py
+++ b/mjo/eja/eja_element_subalgebra.py
@@ -163,5 +163,10 @@ class FiniteDimensionalEuclideanJordanElementSubalgebra(FiniteDimensionalEuclide
             return self.zero()
         else:
             sa_one = self.superalgebra().one().to_vector()
-            sa_coords = self.vector_space().coordinate_vector(sa_one)
-            return self.from_vector(sa_coords)
+            # The extra hackery is because foo.to_vector() might not
+            # live in foo.parent().vector_space()!
+            coords = sum( a*b for (a,b)
+                          in zip(sa_one,
+                                 self.superalgebra().vector_space().basis()) )
+            return self.from_vector(self.vector_space().coordinate_vector(coords))
+