Epsilon

Epsilon (ε) is a small, positive number used in mathematics and computer science to represent a tiny difference or tolerance. It's often employed to compare values that are nearly equal, accounting for minor measurement or calculation errors. For example, when two numbers are considered equal if their difference is less than epsilon, it helps avoid issues caused by very close or floating-point precision errors. Essentially, epsilon defines an acceptable margin of error or uncertainty, ensuring more reliable comparisons and calculations in various technical contexts.