From: Michael Orlitzky <michael@orlitzky.com>
Date: Sun, 13 Sep 2020 20:32:43 +0000 (-0400)
Subject: mjo/matrix_vector: fix phi_inv implementation in basis_representation().
X-Git-Url: https://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=823dcc730b55cf40986a3af244a143f0c5a5cb21;p=sage.d.git

mjo/matrix_vector: fix phi_inv implementation in basis_representation().
---

diff --git a/mjo/matrix_vector.py b/mjo/matrix_vector.py
index 4b4818d..62b75fd 100644
--- a/mjo/matrix_vector.py
+++ b/mjo/matrix_vector.py
@@ -121,7 +121,7 @@ def basis_representation(M):
         `M` or the span of `M` (depending on whether or not ``M``
         is a ``MatrixSpace`` or a basis).
         """
-        return sum( Y[i]*basis[i] for i in range(len(Y)) )
+        return basis_space.linear_combination( zip(Y,basis) )
 
     return (phi, phi_inv)