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    Real Analysis : Limit Superior

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    Let a_n be bounded sequence.prove that a-the sequence defined by y_n=sup{a_k:k>=n} converges.

    b- Prove that lim inf a_n<=lim sup a_n for every bounded sequence and give example of a sequence which the inequality is strict.

    © BrainMass Inc. brainmass.com February 24, 2021, 2:34 pm ad1c9bdddf
    https://brainmass.com/math/real-analysis/real-analysis-limit-superior-30048

    Solution Preview

    Proof:
    a. Since a_n is bounded, say |a_n|<=M for all n and some M>0. y_n=sup{a_k:k>=n}, then |y_n|<=M. So y_n is bounded. We note the set {a_k:k>=n+1) is contained in the ...

    Solution Summary

    Limit Superior is investigated.

    $2.19

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