+ EXAMPLES:
+
+ Keeping in mind that the polynomial ``1`` evaluates the identity
+ element (also the zero element) of the trivial algebra, it is clear
+ that the polynomial ``1`` is the minimal polynomial of the only
+ element in a trivial algebra::
+
+ sage: J = TrivialEJA()
+ sage: J.one().minimal_polynomial()
+ 1
+ sage: J.zero().minimal_polynomial()
+ 1
+