How to find generators of right kernel of a matrix


(Matrix R^m x d
s = subset(1:m,d))

and correspend this math notation.

Is there any funtions for these

This is too abstract for me. Could you please translate at least something of it to Julia?

Do you want a basis (i.e. generating set) for the right nullspace (i.e. right kernel) of a matrix over the reals? You can use the nullspace function for this.