Crossing symmetry implemented in ππ D- and F-wave amplitudes

Once subtracted dispersion relations with imposed crossing symmetry condition are applied in description of the ππ D and F wave amplitudes. Equations similar to those with one subtraction (so called GKPY equations) and to those with two subtractions (the Roy's equations) for the S and P waves are derived. We show that they impose strong constraints on experimental data and model amplitudes. Therefore, together with already known GKPY equations these relations can be efficiently used to test the ππ amplitudes in the S, P and D wave.