From: Michael Orlitzky <michael@orlitzky.com>
Date: Sun, 13 Dec 2020 22:45:16 +0000 (-0500)
Subject: eja: change matrix_space() to use parent().
X-Git-Url: https://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=e05c37cc70d3ca1a3df761d92e46e93490716063;p=sage.d.git

eja: change matrix_space() to use parent().

This allows it to work when the "matrix basis" lives in a Cartesian
product space.
---

diff --git a/mjo/eja/eja_algebra.py b/mjo/eja/eja_algebra.py
index db899dd..ae41b8c 100644
--- a/mjo/eja/eja_algebra.py
+++ b/mjo/eja/eja_algebra.py
@@ -737,7 +737,7 @@ class FiniteDimensionalEJA(CombinatorialFreeModule):
         if self.is_trivial():
             return MatrixSpace(self.base_ring(), 0)
         else:
-            return self._matrix_basis[0].matrix_space()
+            return self.matrix_basis()[0].parent()
 
 
     @cached_method