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◆ From: 140.112.218.142
If two sequences {a_n} and {b_n} are bounded below in R, we have
lim sup (a_n+b_n) ≦ lim sup a_n + lim sup b_n.
n→∞ n→∞ n→∞
Given a example such that ≦ can be <.
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