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@alreadydone alreadydone commented May 29, 2025

A conjecture by myself in a research paper.

@alreadydone alreadydone changed the title feat: Main conjecture on fusible numbers feat: main conjecture on fusible numbers May 29, 2025
@Paul-Lez Paul-Lez self-requested a review May 29, 2025 22:55
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Nice!

Logical Methods in Computer Science, Volume 18, Issue 3 (July 28, 2022) lmcs:8555
-/

inductive IsFusible : ℚ → Prop
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Would you mind adding a docstring for this definition?

inductive IsFusible : ℚ → Prop
| zero : IsFusible 0
| fuse (a b : ℚ) : IsFusible a → IsFusible b → |a - b| < 1 → IsFusible ((a + b + 1) / 2)

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I think it could also be nice to add a few "test"/API statements about this definition, e.g. proving certain known numbers are fusible, and basic results (which can be left sorried out:))

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Let's move it to the Arxiv folder.

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Should published papers be there?

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ah, if it is published, then this place is fine, let's in addition to the arxiv link also add the doi link (
https://doi.org/10.46298/lmcs-18%283%3A6%292022) or direct journal link (https://lmcs.episciences.org/9850) perhaps?

namely `z = 2 * q - 1 - s^(n+1)(x)`, and it is easy to see `z ∈ [x + 1 - m / 2 ^ n, x + 1)` as required. -/
@[category research open, AMS 05]
theorem conj_7_1 (x y q : ℚ) (n : ℕ) (fus_x : IsFusible x) (fus_y : IsFusible y) (lt : x < y)
(nmem_Icc : ∀ z, IsFusible z → z ∉ Set.Icc x y) :
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Something seems off here: isn't nmem_Icc x fus_ x the statement x ∉ Set.Icc x y, which is always False, making this entire conjecture empty?
Should "instead of defining y to be the successor of x, we assert that there is no fusible number between x and y;" it be something like (no_fus_between : ∀ z ∈ Set.Ioo x y, ¬ IsFusible z)?

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@alreadydone alreadydone Jun 4, 2025

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Good catch! It should indeed be Ioo, and switching order looks better too

@Paul-Lez Paul-Lez added the Awaiting author A reviewer has asked the author a question or requested changes. label Jun 5, 2025
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