Symbolic method
In mathematics, the symbolic method in invariant theory is an algorithm developed by Cayley (1846), Siegfried HeinrichAronhold (1858), AlfredClebsch (1861), and PaulGordan (1887) in the 19th century for computing invariants of algebraic forms. It is based on treating the form as if it were a power of a degree one form, which corresponds to embedding a symmetric power of a vector space into the symmetric elements of a tensor product of copies of it.