  We construct the gluon wave functions, fragmentation functions and scattering
amplitudes within the light-front perturbation theory. Recursion relations on
the light-front are constructed for the wave functions and fragmentation
functions, which in the latter case are the light-front analogs of the
Berends-Giele recursion relations. Using general relations between wave
functions and scattering amplitudes it is demonstrated how to obtain the
maximally-helicity violating amplitudes, and explicit verification of the
results is based on simple examples.
