Question

difference between topological space and metric space​

Answer 1

Answer:

The space (X,τ) is called the topological space and the set τ is called a topology on X. The elements of τ are called open sets. A metric space is a set X and a function d:X×X→R+∪{0} called the "metric" which takes in two elements from the set and pops out a non-negative real number.