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Souvik Pal posted an Question
February 20, 2021 • 05:20 am 30 points
  • IIT JAM
  • Mathematics (MA)

Please help me to solve 4.4.4 & 4.4.5

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    Satpal singh best-answer

    visit these links https://math.stackexchange.com/questions/135566/infinite-class-of-closed-sets-whose-union-is-not-closed/135571 https://math.stackexchange.com/questions/1460853/infinite-intersection-of-open-sets#:~:text=For%20example%2C%20%E2%88%A9%E2%88%9En,are%20neither%20open%20nor%20closed.

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