• Higman's theorem may refer to: Hall–Higman theorem in group theory, proved in 1956 by Philip Hall and Graham Higman Higman's embedding theorem in group...
    297 bytes (63 words) - 13:51, 20 July 2019
  • In group theory, Higman's embedding theorem states that every finitely generated recursively presented group R can be embedded as a subgroup of some finitely...
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  • 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. A finitary...
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  • Thumbnail for Graham Higman
    G. Higman, but studied also by Graham Higman. Higman's embedding theorem Feit-Higman theorem Higman group Higman's lemma HNN extension Hall–Higman theorem...
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  • Grushko theorem (group theory) Higman's embedding theorem (group theory) Isoperimetric gap (geometric group theory, metric geometry) Jordan–Hölder theorem (group...
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  • Introduced in a 1949 paper Embedding Theorems for Groups by Graham Higman, Bernhard Neumann, and Hanna Neumann, it embeds a given group G into another...
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  • In mathematics, Higman's lemma states that the set Σ ∗ {\displaystyle \Sigma ^{*}} of finite sequences over a finite alphabet Σ {\displaystyle \Sigma }...
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  • In mathematics, the Feit–Thompson theorem, or odd order theorem, states that every finite group of odd order is solvable. It was proved in the early 1960s...
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  • construction. 1961 (1961): Graham Higman characterises the subgroups of finitely presented groups with Higman's embedding theorem, connecting recursion theory...
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  • while neither being Hopfian nor being non-Hopfian are Markov. Higman's embedding theorem Bass–Serre theory S. I. Adyan, Algorithmic unsolvability of problems...
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  • by embedding is a well-quasi-order if and only if ( X , ≤ ) {\displaystyle (X,\leq )} is a well-quasi-order (Higman's lemma). Recall that one embeds a...
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  • (respectively S-universal for/in P {\displaystyle {\mathcal {P}}} ). The Higman Embedding Theorem can be used to prove that there is a finitely presented group that...
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  • Thumbnail for Classification of finite simple groups
    classification of finite simple groups (popularly called the enormous theorem) is a result of group theory stating that every finite simple group is...
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  • Generalized 4-gons are called generalized quadrangles. By the Feit-Higman theorem the only finite generalized n-gons with at least three points per line...
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  • unsolvable. This has some interesting consequences. For instance, the Higman embedding theorem can be used to construct a group containing an isomorphic copy...
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  • However a theorem of Graham Higman states that a finitely generated group has a recursive presentation if and only if it can be embedded in a finitely...
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  • Thumbnail for Simple group
    eventually arrives at uniquely determined simple groups, by the Jordan–Hölder theorem. The complete classification of finite simple groups, completed in 2004...
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  • following result, providing a far-reaching generalization of Higman's embedding theorem: The word problem of a finitely generated group is decidable in...
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  • Prentice-Hall Lindner, Charles C.; Evans, Trevor (1977), Finite embedding theorems for partial designs and algebras, Séminaire de Mathématiques Supérieures...
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  • Thumbnail for Rewrite order
    ordering The proof of this property is based on Higman's lemma, or, more generally, Kruskal's tree theorem. Nachum Dershowitz; Jean-Pierre Jouannaud (1990)...
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  • Thumbnail for Symmetric group
    automorphisms. Sn can be embedded into An+2 by appending the transposition (n + 1, n + 2) to all odd permutations, while embedding into An+1 is impossible...
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  • finite simple groups. Close to half of the proof of the Feit–Thompson theorem involves intricate calculations with character values. Easier, but still...
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  • Thumbnail for Mathieu group M11
    Horton (1971), "Three lectures on exceptional groups", in Powell, M. B.; Higman, Graham (eds.), Finite simple groups, Proceedings of an Instructional Conference...
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  • Thumbnail for Mathieu group M24
    is a split extension of M21 by the symmetric group S3. PΓL(3,4) has an embedding as a maximal subgroup of M24.(Griess 1998, p. 55) A hyperoval has no 3...
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