Formalization of Erdős Problem 414 added #1247
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Paul-Lez
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Nov 21, 2025
| $i$ and $j$ such that $h_i(m) = h_j(n)$? | ||
| -/ | ||
| @[category research open, AMS 11] | ||
| theorem erdos_414 : (∀ᵉ (m) (n), ∃ i j, h^[i] m = h^[j] n) ↔ answer(sorry) := by |
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Note that you'll need to restrict to positive m and n otherwise the theorem is false for silly reasons!
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| theorem erdos_414 : (∀ᵉ (m) (n), ∃ i j, h^[i] m = h^[j] n) ↔ answer(sorry) := by | |
| theorem erdos_414 : (∀ᵉ (m > 0) (n > 0), ∃ i j, h^[i] m = h^[j] n) ↔ answer(sorry) := by |
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This formalizes Erdős Problem 414. If anything needs or should be changed, let me know.
fixes #717