eja: fix parent of empty sum in element inverse().

[sage.d.git] / mjo / eja / eja_operator.py

diff --git a/mjo/eja/eja_operator.py b/mjo/eja/eja_operator.py
index 6ec335f7560f174cf205b1f814fc7a1438a35e6c..a8beed662e1a700f2146f1dc9f0940857b9339ec 100644 (file)
--- a/mjo/eja/eja_operator.py
+++ b/mjo/eja/eja_operator.py
@@ -239,8 +239,8 @@ class FiniteDimensionalEJAOperator(Map):
         We can scale an operator on a rational algebra by a rational number::
 
             sage: J = RealSymmetricEJA(2)
-            sage: e0,e1,e2 = J.gens()
-            sage: x = 2*e0 + 4*e1 + 16*e2
+            sage: b0,b1,b2 = J.gens()
+            sage: x = 2*b0 + 4*b1 + 16*b2
             sage: x.operator()
             Linear operator between finite-dimensional Euclidean Jordan algebras
             represented by the matrix:
@@ -272,8 +272,7 @@ class FiniteDimensionalEJAOperator(Map):
 
         # This should eventually delegate to _composition_ after performing
         # some sanity checks for us.
-        mor = super(FiniteDimensionalEJAOperator,self)
-        return mor.__mul__(other)
+        return super().__mul__(other)
 
 
     def _neg_(self):
@@ -471,7 +470,6 @@ class FiniteDimensionalEJAOperator(Map):
         The left-multiplication-by-zero operation on a given algebra
         is its zero map::
 
-            sage: set_random_seed()
             sage: J = random_eja()
             sage: J.zero().operator().is_zero()
             True
@@ -511,7 +509,6 @@ class FiniteDimensionalEJAOperator(Map):
 
         The identity operator is its own inverse::
 
-            sage: set_random_seed()
             sage: J = random_eja()
             sage: idJ = J.one().operator()
             sage: idJ.inverse() == idJ
@@ -519,7 +516,6 @@ class FiniteDimensionalEJAOperator(Map):
 
         The inverse of the inverse is the operator we started with::
 
-            sage: set_random_seed()
             sage: x = random_eja().random_element()
             sage: L = x.operator()
             sage: not L.is_invertible() or (L.inverse().inverse() == L)
@@ -562,14 +558,12 @@ class FiniteDimensionalEJAOperator(Map):
 
         The identity operator is always invertible::
 
-            sage: set_random_seed()
             sage: J = random_eja()
             sage: J.one().operator().is_invertible()
             True
 
         The zero operator is never invertible in a nontrivial algebra::
 
-            sage: set_random_seed()
             sage: J = random_eja()
             sage: not J.is_trivial() and J.zero().operator().is_invertible()
             False
@@ -641,7 +635,7 @@ class FiniteDimensionalEJAOperator(Map):
 
             sage: J = RealSymmetricEJA(4)
             sage: x = sum(J.gens())
-            sage: A = x.subalgebra_generated_by(orthonormalize_basis=True)
+            sage: A = x.subalgebra_generated_by()
             sage: L0x = A(x).operator()
             sage: sd = L0x.spectral_decomposition()
             sage: l0 = sd[0][0]