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Erdős problem 633

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A triangle whose side lengths and angles are integrally independent is cuttable only into a non-zero square number of congruent triangles. This is proved in [So09c].

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The source's own material, retained exactly.

8 retained statements36c6d0fef71a

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FormalConjectures/ErdosProblems/

633.lean

Retained formal statement4 of 8

A triangle isn't cuttable into zero triangles.

FormalConjectures/ErdosProblems/633.leanErdos633.IsCuttable.ne_zero1 lineExact file
∀ {n : ℕ} {T : Affine.Triangle ℝ (EuclideanSpace ℝ (Fin 2))}, Erdos633.IsCuttable n T → n ≠ 0
APIStatement only, no proof