Internal Twists of L-Functions. II

详细

A nonlinear twist F(s; f) of a function F(s) from the extended Selberg class S^# is called internal if it belongs to S^#. In a previous paper (2014) we showed that, inside a rather general class of nonlinear twists, the internal twists occur only in very special cases; moreover, we gave a first characterization of such twists. Here we complete our previous work by giving a fully detailed description of such internal twists.