SFA, a package on symmetric functions considered as operators over the ring of polynomials for the computer algebra system MAPLE (Q1971495)

SFA package, symmetric functions on different alphabets, gives the possibility to perform formal computations by implementing the structure of \(\Delta\)-ring of symmetric functions viewed as operators. SFA is implemented in Maple. It is similar with Symmetrica and Sym for Macsyma. As an example, a recover procedure is taken for different classical expressions of Lagrange inversion and of Faber polynomials.