👉 Surrejoinders are a type of mathematical function that is defined as follows: $$ f(x) = \sum_{n=1}^{\infty}\frac{(-1)^{n-1}}{(2n+1)!}x^{2n+1} $$ This series converges to the exponential function, e^(x), where x is a real number. Surrejoinders are often used in mathematical analysis and have applications in probability theory, quantum mechanics
