Recursion: The Concept Recursion is used in a variety of disciplines ranging from math, to computer science to linguistics. Recursion is one of the central ideas of computer science – where a function can call itself from within its own code, allowing for very powerful computation. Recursion in computer science – as in the recursive n-back – is a method of solving a problem where the solution depends on solutions to smaller instances of the same problem. What is recursion? Recursion occurs