👉 Polesian is a term used in mathematics and physics to describe a complex function that can be described by an infinite series of terms involving sine, cosine, and exponential functions. The poles of this function are points where the imaginary part of the function becomes zero. For example, consider the function f(x) = x^2 + 1. This function is defined for all real numbers except at x = 0 because the imaginary part of the function (i.e., the term with an exponent
