Question

Let A be a closed set in topological space Y and let X be a measurable space
and let f : x⇒y be measurable then prove that F⁻1 (A) is measurable set F⁻1 (E)

Answer 1

Answer:

Step-by-step explanation:

Limit Point of a Set. Let be atopological space with topology , and be a subset of . A point x ∈ X is said to be the limit point or accumulation point or cluster point of if each openset containing contains at least onepoint of different from .