X-Git-Url: http://gitweb.michael.orlitzky.com/?p=sage.d.git;a=blobdiff_plain;f=mjo%2Feja%2Feja_algebra.py;h=e6aba200a90a0317150bde9093f6a28569d2db74;hp=4a1c6f94f589c80b9021b71ee01693765aabcaeb;hb=3f49e3bf2b85b1918c1abb0e8973a6f203dabc86;hpb=82d3e5bb067d73eb0aa557d234da0f9723b456e8

diff --git a/mjo/eja/eja_algebra.py b/mjo/eja/eja_algebra.py
index 4a1c6f9..e6aba20 100644
--- a/mjo/eja/eja_algebra.py
+++ b/mjo/eja/eja_algebra.py
@@ -779,8 +779,10 @@ class FiniteDimensionalEJA(CombinatorialFreeModule):
             if elt.parent().superalgebra() == self:
                 return elt.superalgebra_element()
 
-        if hasattr(elt, 'column'):
-            # Convert a vector into a column-matrix...
+        if hasattr(elt, 'sparse_vector'):
+            # Convert a vector into a column-matrix. We check for
+            # "sparse_vector" and not "column" because matrices also
+            # have a "column" method.
             elt = elt.column()
 
         if elt not in self.matrix_space():