One of the following spaces is first.14 * countable but not second countable 1) (1 نقطة) The reals R with the indiscrete
Posted: Tue Sep 07, 2021 7:10 am
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One of the following spaces is first.14 * countable but not second countable 1) (1 نقطة) The reals R with the indiscrete topology The reals R with the usual topology O The reals R with the discrete topology O The reals R with the left ray topology The reals R with the co-countable topology The reals R with the co-finite topology