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feat(ErdosProblems): 1088, Distinct Distances Conjecture in ℝᵈ#1386

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manastole03:Erdős_Problem_1088

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feat(ErdosProblems): 1088, Distinct Distances Conjecture in ℝᵈ#1386
manastole03 wants to merge 4 commits intogoogle-deepmind:mainfrom
manastole03:Erdős_Problem_1088

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@manastole03 manastole03 commented Dec 13, 2025

This PR adds Erdős Problem #1088, an open conjecture related to distinct distances among points in high-dimensional Euclidean space.

The problem defines a function that measures the minimum number of points required so that any such set contains a subset of points where all pairwise distances are different. The conjecture asks for estimates of this function and whether it grows subexponentially with respect to the dimension when the number of points is fixed.

Status: Open
Reference: https://www.erdosproblems.com/1088

This contribution helps expand the repository’s coverage of open Erdős problems and makes this conjecture available for future discussion and exploration.

Closes #1288

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google-cla Bot commented Dec 13, 2025

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This PR adds Erdős Problem #1088, an open conjecture related to distinct distances among points in high-dimensional Euclidean space.

The problem defines a function that measures the minimum number of points required so that any such set contains a subset of points where all pairwise distances are different. The conjecture asks for estimates of this function and whether it grows subexponentially with respect to the dimension when the number of points is fixed.

Status: Open
Reference: https://www.erdosproblems.com/1088

This contribution helps expand the repository’s coverage of open Erdős problems and makes this conjecture available for future discussion and exploration.

@YaelDillies YaelDillies changed the title Add Erdős Problem #1088: Distinct Distances Conjecture in ℝᵈ feat(ErdosProblems): 1088, Distinct Distances Conjecture in ℝᵈ Dec 17, 2025
Comment thread FormalConjectures/ErdosProblems/1088.lean
@YaelDillies YaelDillies added the awaiting-author The author should answer a question or perform changes. Reply when done. label Dec 20, 2025
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mo271 commented Jan 29, 2026

@manastole03 are you still working on this?

@github-actions github-actions Bot added the erdos-problems Erdős Problems label Apr 28, 2026
variable {d : ℕ}

/-- A finite set of points has all pairwise distances distinct. -/
def pairwiseDistancesDistinct (A : Finset (ℝ^d)) : Prop :=
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Suggested change
def pairwiseDistancesDistinct (A : Finset (ℝ^d)) : Prop :=
def PairwiseDistancesDistinct (A : Finset (ℝ^d)) : Prop :=

same below

Comment on lines +72 to +73
∀ d ≥ 3, ∃ c₁ c₂ : ℕ, 0 < c₁ ∧ c₁ ≤ c₂ ∧
∀ n ≥ 1, 2 ^ (c₁ * n) ≤ f d n ∧ f d n ≤ 2 ^ (c₂ * n) := by
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f d n := 1.5 ^ n is definitely exponential but wouldn't be considered so by this definition.

Suggested change
∀ d ≥ 3, ∃ c₁ c₂ : , 0 < c₁ ∧ c₁ ≤ c₂ ∧
∀ n ≥ 1, 2 ^ (c₁ * n) ≤ f d n ∧ f d n ≤ 2 ^ (c₂ * n) := by
∀ d ≥ 3, ∃ c₁ c₂ : \R, 0 < c₁ ∧ c₁ ≤ c₂ ∧
∀ n ≥ 1, 2 ^ (c₁ * n) ≤ f d n ∧ f d n ≤ 2 ^ (c₂ * n) := by

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Erdős Problem 1088

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