Complete metric space

A complete metric space is a special type of space made up of numbers or points that have a specific distance from each other. In this space, for any two points, the distance between them is always the same. So, no matter how far apart two points are, the distance between them is always the same. This space is considered to be complete because it is complete in the sense that no matter how many points you have, the distance between all of them will always be the same.