Lax Lean Archive

Draft — mutable and not usable as a dependency; its citation marks the draft state.

Lax68.StarTree

Stars are trees

concepts/Lax68/StarTree.lean · lax-68

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    Open claimDefinitionThis conceptRelated conceptA → B: B builds on A

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    Theorem

    Every star graph is a tree.

    Lean source view on GitHub

    1import Lax68.Stars
    2import Lax68.Trees
    3
    4/-!
    5---
    6title: Stars are trees
    7type: theorem
    8---
    9Every star graph is a tree.
    10-/
    11
    12set_option autoImplicit false
    13
    14namespace Lax68.StarTree
    15
    16axiom star_tree {V : Type*} {G : SimpleGraph V} :
    17 Lax68.Stars.IsStar G →
    18 Lax68.Trees.IsTree G
    19
    20end Lax68.StarTree
    21

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