Bivariate Generating

Some articles on bivariate generating, generating:

Examples Of Generating Functions - Worked Example A: Basics - Bivariate Generating Functions
... One can define generating functions in several variables, for series with several indices ... These are often called super generating functions, and for 2 variables are often called bivariate generating functions ... For instance, since is the generating function for binomial coefficients for a fixed n, one may ask for a bivariate generating function that generates the binomial coefficients for ...