TheoremJS is a mathematical framework that is packed up with tons of useful mathematical functions. It is composed of functions in most mathematical fields such as algebra, number theory, statistics, etc... It was designed to fit your need, whatever you are trying to do.

Bottender is Flexible, declare handlers as any JavaScript function. Modern, source written with ES6/ES7 syntax and great async await supports. Modular, use session stores, server framework adapters and platform connectors with same interface. Learn Once, Write Anywhere, handle multiple platforms with consistent development experience.