👉 In mathematics, "holw" refers to a number that is a rational approximation of a given irrational number. It's commonly used in numerical analysis and computer science to represent points on a real line or plane as approximations of real numbers. For example, if you want to approximate the square root of 2, you can use the following method: 1. Start with an initial guess for the square root (e.g., √2 ≈ 1.414213