kinggillian1488 kinggillian1488
  • 07-02-2024
  • Mathematics
contestada

Prove Theorem 2.15: Let A be a subset of a topological space X. (b) ∂A=Cl(A)∩Cl(X−A). (d) ∂A∪Int(A)=Cl(A). (e) ∂A⊂A if and only if A is closed.

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