Evolution of Structure Functions with Jacobi Polynomial: Convergence and   Reliability
  The Jacobi polynomial has been advocated by many authors as a useful tool to evolve non-singlet structure functions to higher $Q^2$. In this work, it is found that the convergence of the polynomial sum is not absolute, as there is always a small fluctuation present. Moreover, the convergence breaks down completely for large $N$. 
Sanjay K. Ghosh and Sibaji Raha