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arXiv 0902.2969cs.LOcs.AIcs.CC
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Ptarithmetic

Ptarithmetic

Villanova University(维拉诺瓦大学)

Giorgi Japaridze

摘要:

本文介绍了ptarithmetic(“多项式时间算术”的缩写)--一种类似于著名的Peano算术的形式数论,但它是基于最近诞生的可计算性逻辑(见http://www.cis.upenn.edu/paggiorgi/cl.html)而不是经典逻辑。ptarithmetic的公式表示交互式计算问题,而不仅仅是真/假语句,它们的“真”被理解为存在一个多项式时间解。本文所阐述的算法体系是完善的。在这个意义上,系统的每个定理T都代表了一个具有多项式时间解的交互数论计算问题,而且,这样的解可以有效地从T的证明中提取出来。完备性的意义在于,每一个具有多项式时间解的交互数论问题都由系统的某个定理T表示。这篇论文是独立的,并且可以在没有任何先前对可计算性逻辑的熟悉的情况下阅读。

英文摘要:

The present article introduces ptarithmetic (short for "polynomial time arithmetic") -- a formal number theory similar to the well known Peano arithmetic, but based on the recently born computability logic (see http://www.cis.upenn.edu/~giorgi/cl.html) instead of classical logic. The formulas of ptarithmetic represent interactive computational problems rather than just true/false statements, and their "truth" is understood as existence of a polynomial time solution. The system of ptarithmetic elaborated in this article is shown to be sound and complete. Sound in the sense that every theorem T of the system represents an interactive number-theoretic computational problem with a polynomial time solution and, furthermore, such a solution can be effectively extracted from a proof of T. And complete in the sense that every interactive number-theoretic problem with a polynomial time solution is represented by some theorem T of the system. The paper is self-contained, and can be read without any previous familiarity with computability logic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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