Novel representation of the general Heun's functions. Back to the   beginning
  We study a novel type of solutions of the general Heun's equation, based on its symmetric form. We derive the symmetry group of this equation which is a proper extension of the Mobius group. The new series solution treat simultaneously and on an equal footing all singular points. 
Plamen P. Fiziev
math.CA gr-qc hep-th math-ph math.MP quant-ph