Computational complexity theory

A traveling salesman tour through Germany’s 15 largest cities.

A decision problem has only two possible outputs, yes or no (or alternately 1 or 0) on any input.

A representation of the relation among complexity classes

Computational complexity theory is a branch of the theory of computation in theoretical computer science that focuses on classifying computational problems according to their inherent difficulty, and relating those classes to each other. A computational problem is understood to be a task that is in principle amenable to being solved by a computer, which is equivalent to stating that the problem may be solved by mechanical application of mathematical steps, such as an algorithm.

单词	Hierarchy theorem
释义	Hierarchy theorem 英语百科 Computational complexity theory Computational complexity theory is a branch of the theory of computation in theoretical computer science that focuses on classifying computational problems according to their inherent difficulty, and relating those classes to each other. A computational problem is understood to be a task that is in principle amenable to being solved by a computer, which is equivalent to stating that the problem may be solved by mechanical application of mathematical steps, such as an algorithm.
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Hierarchy theorem

Computational complexity theory