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Lax68.TriangleMaximalOuterplanar

Triangles are maximal outerplanar

concepts/Lax68/TriangleMaximalOuterplanar.lean · lax-68

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    Theorem

    Every triangle is maximal outerplanar.

    Lean source view on GitHub

    1import Lax68.Triangles
    2import Lax68.MaximalOuterplanar
    3
    4/-!
    5---
    6title: Triangles are maximal outerplanar
    7type: theorem
    8---
    9Every triangle is maximal outerplanar.
    10-/
    11
    12set_option autoImplicit false
    13
    14namespace Lax68.TriangleMaximalOuterplanar
    15
    16axiom triangle_maximalOuterplanar
    17 {V : Type*} {G : SimpleGraph V} :
    18 Lax68.Triangles.IsTriangle G →
    19 Lax68.MaximalOuterplanar.IsMaximalOuterplanar G
    20
    21end Lax68.TriangleMaximalOuterplanar
    22

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