Question

How to calculate singularities in complex analysis?

Answer 1

Singularities, Zeros, and Poles. Recall that the point is called a singular point, or singularity of the complex function f(z) if f is not analytic at , but every neighborhood contains at least one point at which f(z) is analytic. For example, the function is not analytic at , but is analytic for all other values of z.