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Lebl-Basic-Analysis-I
· Problem 7.4.18
Metric Spaces
Mathematics · compactness
Problem
Let
(
X
,
d
)
(X, d)
(
X
,
d
)
be a metric space and
K
⊂
X
K \subset X
K
⊂
X
. Prove that
K
K
K
is compact as a subset of
(
X
,
d
)
(X, d)
(
X
,
d
)
if and only if
K
K
K
is compact as a subset of itself with the subspace metric.
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