The MAPLE package for $SL_2$-invariants and kernel of Weitzenb\"ock   derivations
  We offer a Maple package SL\_2\_Inv\_Ker for calculating of minimal generating sets for the algebras of joint invariants/semi-invariants of binary forms and for calculations of the kernels of Weitzenb\"ock derivations. 
Leonid Bedratyuk
math.AG math.AC