sage: from mjo.eja.eja_operator import FiniteDimensionalEuclideanJordanAlgebraOperator
sage: from mjo.eja.eja_algebra import (
....: JordanSpinEJA,
sage: from mjo.eja.eja_operator import FiniteDimensionalEuclideanJordanAlgebraOperator
sage: from mjo.eja.eja_algebra import (
....: JordanSpinEJA,
sage: J3 = RealSymmetricEJA(1)
sage: mat1 = matrix(QQ, [[1,2,3],
....: [4,5,6]])
sage: J3 = RealSymmetricEJA(1)
sage: mat1 = matrix(QQ, [[1,2,3],
....: [4,5,6]])