The calculations for the paper Hilbert series of measures of entanglement for 4 qubits.

The link is to a file that contains the Mathematica code used in the reduction of the degrees of invariants necessary to calculate the nullcone.

The reduction.

The above calculation calls a file that is given below.

The functions used in the above.

The next file is the C code used in calculating the dimensions of the spaces of invariants.

The C code.