KnowraFormal power seriesLinked fromLinked fromThe 19 pages that link to Formal power series, each with the reason it gives.All 19Related 7Narrower topic 5Compared with 7Generating functionNarrower topic: Generating functions are formal power series equipped with an interpretation for their coefficients.Exponential generating functionNarrower topic: The generating function can be defined formally, independent of analytic convergence.q-seriesNarrower topic: Many q-series identities are first interpreted algebraically, without assigning a value to q.Lagrange inversion theoremNarrower topic: The theorem applies to power series formally, so analytic convergence need not be assumed.Pentagonal number theoremNarrower topic: The product identity is commonly interpreted coefficient by coefficient in this setting.