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Metric Spaces Study Notes Metric Spaces Notes Definition 1.2.1 A nonempty set \( X \) with a map \( d: […]
Metric Spaces Study Notes Metric Spaces Notes Definition 1.2.1 A nonempty set \( X \) with a map \( d: […]
Proof: An Open Sphere is an Open Set Proposition: In any metric space \((X, d)\), an open sphere is an
Proof: A Closed Sphere is a Closed Set Proposition: In any metric space \((X, d)\), a closed sphere is a