Tietjens' Theorem

Tietjens' Theorem is a result in mathematics that provides a way to express certain functions—called analytic functions—in a structured form using infinite series. Specifically, it relates to representing functions with complex variables, especially those that are holomorphic (smooth and complex-differentiable), as sums of simpler parts called series expansions. This theorem helps mathematicians analyze and understand the behavior of these functions, particularly near specific points, by breaking them down into manageable components. Overall, it offers a powerful method to study complex functions systematically.