# Complexity Zoo:K

From Complexity Zoo

Revision as of 06:06, 1 April 2012 by Emil Jeřábek (Talk)

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##### K: Feasibly recursive functions

A class of number-theoretic functions, defined as the closure of basic integer arithmetic operations (, as well as constants 0, 1, and projections) under composition and polynomially long sums and products. Defined by [Con73], who mistakenly claimed it coincides with FP.