Editing Cauchy principal value (section)

{{short description|Method for assigning values to certain improper integrals which would otherwise be undefined}}
{{about|a method for assigning values to improper integrals|the values of a complex function associated with a single branch|Principal value|the negative-power portion of a [[Laurent series]]|Principal part}}
In [[mathematics]], the '''Cauchy principal value''', named after [[Augustin-Louis Cauchy]], is a method for assigning values to certain [[improper integral]]s which would otherwise be undefined. In this method, a [[Singularity (mathematics)|singularity]] on an integral interval is avoided by limiting the integral interval to the non singular domain.