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    In computational complexity theory the compression theorem is an important theorem about the complexity of computable functions.
    The theorem states that there exists no largest complexity class, with computable boundary, which contains all computable functions.


        Compression theorem
            Compression theorem

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    Compression theorem
    Given a Gödel numbering varphi of the computable functions and a Blum complexity measure Phi where a complexity classe for a boundary function f is defined as
    mathrm(f):= .


    Then there exists a total computable function f so that forall i
    mathrm(varphi_i) = mathrm(varphi_)

    and
    mathrm(varphi_i) subsetneq mathrm(varphi_)


     
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    Scientus.org Dictionary (Yet Another Wiki) RC : 1.39
    This article is licensed under the GNU Free Documentation License [copyleft]. It uses material from the Wikipedia article "Compression theorem". link