g=ctranspose(f) is called for the syntax f' and computes the involution of the polynomial f. If f is a matrix of NCpolys, this command also applies complex conjugate transpose at the same time.

NCpoly representing the polynomial f or matrix of NCpolys

NCpoly representing the involution of the polynomial f

f', ctranspose(f)

>> [x*y^2-x*y,2*x*y]'
ans = -y*x+y^2*x
           2*y*x

>> [i*x x*y; i+x^2*y y^2*x]'
ans = -i*x   -i+y*x^2
       y*x      x*y^2