👉 The term "expansum" is a mathematical concept that refers to an infinite sum of positive numbers. It is also known as an infinite series or a divergent series, and it can be defined in many different ways depending on its properties. In general, if we have a sequence of positive numbers $a_1, a_2, \ldots$ such that the limit $\lim_{n\to\infty} a_n = L$, then the sum $S$ of