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Horrifyingflamingaming

03/27/2015 10:18 PM ·Spoilers

In mathematics, Kruskal's tree theorem states that the set of finite trees over a well-quasi-ordered set of labels is itself well-quasi-ordered (under homeomorphic embedding).[clarification needed] The theorem was conjectured by Andrew Vázsonyi and proved by Joseph Kruskal (1960); a short proof was given by Nash-Williams (1963). Higman's lemma is a special case of this theorem, of which there are

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  • generalizations involving trees with a planar embedding, infinite trees, and so on. A generalization from trees to arbitrary graphs is given by the Robertson–Seymour theorem.

    Yeahs1
  • I was going over Kruskal's algorithm in math class a couple weeks ago. Creepy.

    Yeahs1

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