4 ms·

AFAIK, he did: https://en.wikipedia.org/wiki/Cantor%27s_first_set_theory_article https://en.wikipedia.org/wiki/Cantor%27s_first_set_theory_ar...

• jwilk 4y ago
  The proof of the lemma in https://en.wikipedia.org/wiki/Cantor%27s_first_set_theory_article#Second_theorem https://en.wikipedia.org/wiki/Cantor%27s_first_set_theory_ar... doesn't look right to me. They say "Since the endpoints of (a₁, b₁) are x₁ and x₂", but in the example below a₁ = x₅, b₁ = x₁₂. Am I missing something?
  • ComodoHacker 4y ago
    Corrected. 'Fast' wiki in action!
    • jwilk 4y ago
      Wait, what's corrected?
      • ComodoHacker 4y ago
        I couldn't find the fragment you cited.
        • jwilk 4y ago
          It's stil there.