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Lebl-Basic-Analysis-I
· Problem 7.3.6
Metric Spaces
Mathematics · sequences-and-convergence
Problem
Let
(
X
,
d
)
(X, d)
(
X
,
d
)
be a metric space where
d
d
d
is the discrete metric. Suppose
{
x
n
}
n
=
1
∞
\{x_n\}_{n=1}^\infty
{
x
n
}
n
=
1
∞
is a convergent sequence in
X
X
X
. Show that there exists a
K
∈
N
K \in \mathbb{N}
K
∈
N
such that for all
n
≥
K
n \geq K
n
≥
K
, we have
x
n
=
x
K
x_n = x_K
x
n
=
x
K
.
Related theory
Sequences Convergence Cauchy Sequences Subsequences
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