eja: switch some index orderings to agree with row-then-column semantics.

This doesn't actually affect anything in these cases, but the row "i"
indices should be on the outside whenever we loop through a
two-dimensional array that corresponds to a matrix.

diff --git a/mjo/eja/eja_algebra.py b/mjo/eja/eja_algebra.py
index 70f04ef31d4bd04824d51b3d669d7b5ff947eeeb..8fe3a3ceee26f579b7ce9fa126d2169c2a12ec62 100644 (file)
--- a/mjo/eja/eja_algebra.py
+++ b/mjo/eja/eja_algebra.py
@@ -638,8 +638,8 @@ class RealCartesianProductEJA(FiniteDimensionalEuclideanJordanAlgebra):
     """
     def __init__(self, n, field=QQ):
         V = VectorSpace(field, n)
-        mult_table = [ [ V.basis()[i]*(i == j) for i in range(n) ]
-                       for j in range(n) ]
+        mult_table = [ [ V.basis()[i]*(i == j) for j in range(n) ]
+                       for i in range(n) ]
 
         fdeja = super(RealCartesianProductEJA, self)
         return fdeja.__init__(field, mult_table, rank=n)
@@ -826,7 +826,7 @@ def _multiplication_table_from_matrix_basis(basis):
     V = VectorSpace(field, dimension**2)
     W = V.span_of_basis( _mat2vec(s) for s in basis )
     n = len(basis)
-    mult_table = [[W.zero() for i in range(n)] for j in range(n)]
+    mult_table = [[W.zero() for j in range(n)] for i in range(n)]
     for i in range(n):
         for j in range(n):
             mat_entry = (basis[i]*basis[j] + basis[j]*basis[i])/2
@@ -1292,7 +1292,7 @@ class JordanSpinEJA(FiniteDimensionalEuclideanJordanAlgebra):
     """
     def __init__(self, n, field=QQ):
         V = VectorSpace(field, n)
-        mult_table = [[V.zero() for i in range(n)] for j in range(n)]
+        mult_table = [[V.zero() for j in range(n)] for i in range(n)]
         for i in range(n):
             for j in range(n):
                 x = V.basis()[i]