Given the comments, should this question be reopened Is |A| < |B| possible if A->B is surjective?

With a negative score, no answers and closed it will be automatically deleted, losing the comments in the process.

  • $\begingroup$ I have left a comment, suggesting that Joel post, and answer, an improved version of the question. $\endgroup$ Dec 13, 2023 at 20:57
  • 2
    $\begingroup$ As mentioned in Asaf's comment, the question would be a duplicate of mathoverflow.net/questions/65369/… anyway if it weren't closed for another reason. $\endgroup$ Dec 14, 2023 at 7:09


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