+A **Laurent series** expresses a [Complex Function](/wiki/complex_function) as an infinite sum, including both positive and negative powers of *z*. It extends the concept of a [Taylor Series](/wiki/taylor_series), revealing function behavior near isolated singularities in [Complex Analysis](/wiki/complex_analysis).
+## See also
+- [Residue Theorem](/wiki/residue_theorem)
+- [Singularity](/wiki/singularity)
+- [Power Series](/wiki/power_series)