CompleteSymmetryAlgebraQ[eq, L] gives True if the provided Lie algebra L is the complete symmetry of the equation eq. |

- To use CompleteSymmetryAlgebraQ, you first need to load the SYM Package using Needs["SYM`"].

- The equation
*eq*must have on the left hand side only one differential term, e.g. u_{t}=...

- The Lie algebra
*L*must be represented by a base of differential operators.