The key element in the Padua Algorithm the transformation t=tan-1(x). Since tan(π/2)= ∞.
 This transforms r =∞ to t= π/2
 i.e.,  0<x<∞ is transformed to  0<t<π/2





Text Box: [see Minelli et al. Nuovo Cimento,v.101 ,p. 1630 (1991)]
the Rarita-Schwinger Equation becomes:
[see Minelli et al. Nuovo Cimento,v.101 ,p. 1630 (1991)]
the Rarita-Schwinger Equation becomes: