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GammaRegularized[a, z]
is the regularized incomplete gamma function Q(a,z).
  • Mathematical function, suitable for both symbolic and numerical manipulation.
  • In non-singular cases, Q(a,z)=Gamma(a,z)/Gamma(a).
  • GammaRegularized[a, z0, z1] is the generalized regularized incomplete gamma function, defined in non-singular cases as Gamma[a, z0, z1]/Gamma[a].
  • For certain special arguments, GammaRegularized automatically evaluates to exact values.
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