你即將離開本站

並前往https://math.stackexchange.com/questions/2449805/error-in-a-proof-that-union-of-a-countable-number-of-at-most-countable-sets-is-a

Error in a proof that union of a countable number of at most ...

"First, since each An is at most countable, we have |An|≤ℵ0 so that by Lemma 1 there is a function fn from N onto An since clearly N is ...

確定！ 回上一頁

查詢 「Error countable」的人也找了：

  1. Field countable or uncountable
    2.
  2. Explanation countable
    3.
  3. Error countable
    4.
  4. Result countable or uncountable
    5.
  5. Judgement countable or uncountable
    6.
  6. Error verb
    7.
  7. Error Dictionary
    8.
  8. Experience countable
    9.