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    P is closed under complementation — Carmelics
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    Supports→P equals coP

    P is closed under complementation

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    1 linked claim · 3 topics

    Modality & Possibility1 linkedPhilosophy of Language1 linked

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    Skepticism1 linked
    NP is not known to be closed under complementation

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    NP is not known to be closed under complementationP equals coPcoC is defined as the class of problems whose complements are in class C

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    NP is not known to be closed under complementation97%Complexity classes like P are closed under complementation91%The class P is closed under complementation (P = coP)91%There is no a priori guarantee that NP is closed under complementation...89%

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    SEP: computational-complexity
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    In contrast to the non-deterministic Turing machine model \(\mathfrak{N}\), the acceptance and rejection conventions for deterministic models of computation such as \(\mathfrak{T}\) are symmetric. In other words, for a deterministic machine \(T\) to either accept or reject an input \(x\), it is both necessary and sufficient that there exist a single halting computation \(C_0(x),\ldots,C_n(x)\). The output of the machine is then determined by whether \(C_n(x)\) is an accepting or rejecting config

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