. C C ] 1 1 A ug 2 00 6 Renormalization group approach to the P versus NP question

نویسنده

  • S. N. Coppersmith
چکیده

This paper argues that the ideas underlying the renormalization group technique applicable to phase transitions in physical systems are useful in distinguishing computational complexity classes. The paper presents a renormalization group transformation that maps an arbitrary Boolean function of N Boolean variables to one of N − 1 variables and shows that when this transformation is applied repeatedly, the behavior of the resulting sequence of functions can be used to distinguish a generic Boolean function from a Boolean function that can be written as a polynomial of degree ξ with ξ ≪ N. It is shown that, if one plausible conjecture is true, the ability to distinguish these two classes of functions can enable one to determine that a given Boolean function cannot be computed using resources that are bounded by a polynomial of N .

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تاریخ انتشار 2006