Prafull Kumar Mehta posted an Question
August 09, 2020 • 06:43 am 30 points
  • IIT JAM
  • Mathematics (MA)

Please write the complete proof a sequence (an) is cauchy iff (an) is convergent.

please write the complete proof A sequence (an) is cauchy iff (an) is convergent.

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  • Kiran goswami

    see attachment we use that cauchy sequence is bounded and every bounded sequence has convergent subsequence.

    cropped3969665024234609477.jpg
    cropped3228598814199253894.jpg
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    what is theorem 1.6

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    theorem 1.6 is if a sequence convergence to l than its every subsequence also convergence to l.

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    any doubt?

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    thank you.

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