N-point correlations of dark matter tracers : Renormalization with
  univariate biasing and its O(f_{NL}) terms with bivariate biasing
  In this note we extend the results of the model of galaxy biasing recently
proposed in (http://arxiv.org/abs/1212.0868v2). In that paper the authors had
outlined a very precise mathematical framework to deal with the theory of
galaxy biasing. In this work we extend that combinatorial technology to
renormalize tracer n-point functions in their model of univariate biasing. We
further prove that 4 and higher point cumulants of the Bardeen potential don't
have an O(f_{NL}) term. Then we use this observation to extract all the
O(f_{NL}) terms in the n-point correlation of tracers in their model of
bivariate biasing.
