Machine Learning, Data Science, Artificial Intelligence.
For the subset C, the element 2 is a boundary point. The closure of C is equal to C itself, which indicates that C is a closed set. Continuous Functions Many concepts in topology can be defined using either open sets or closed sets. Consider two metric spaces 𝐴 and 𝐶, with a mapping function 𝑓:𝐴→𝐶.