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erdős #507 · Heilbronn's triangle problem

← #506 · #508 (packet.json; erdosproblems.com)

Let be such that every set of points in the unit disk contains three points which determine a triangle of area at most . Estimate .

Worked, still open.

geometry · open · formalized (Lean) · 0 attempts

use this record

vela registry pull vfr_37aec80d874a0239
vela reproduce examples/erdos-problems

evidence

unverified AI candidates (2)

gpt-erdos · GPT-5.2 Pro + Deep Research · unverified

Let (D={(x,y):x^{2}+y^{2}\le 1}). For a given $n$-point set (P\subset D), write [ m(P):=\min_{{p,q,r}\subset P}\operatorname{Area}(\triangle pqr). ] Your (\alpha(n)) is exactly the extremal quantity [ \alpha(n)=\sup_{|P|=n,P\subset D} m(P), ] i.e. the **largest possible value of the smallest triangle area** forced amon…

candidate solution ↗

llm-hunter · gpt pro 5.2 · unverified

1 LLM attack(s) recorded (gpt pro 5.2); unverified.

candidate solution ↗

formal

AMS 51 · open (literature)

theorem erdos_507.equivalent:
    α ~[atTop] (answer(sorry) : ℕ → ℝ)
formal-conjectures/507.lean ↗

status

open

notary

vela reproduce examples/erdos-problems
  • packet.json · sha256 b8f0b911bd4799956118d9e05a49eeb048d723ecf65a3456d1c8181d61ed790a

finding.noted · reviewer:will-blair · 1 day

renders the record as of vev_d199cb2e · 1,338 events · hub

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