arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1109.3103math.LO
收藏

非标准算术的函数解释

A functional interpretation for nonstandard arithmetic

Benno van den Berg, Eyvind Briseid, Pavol Safarik

摘要:

我们介绍建设性的和经典的非标准的算术系统,并显示如何变种的功能解释,由于哥德尔和Shoenfield可以用来重写证明在这些系统中执行标准的。这些功能的解释表明,特别是我们的非标准系统是保守的扩展延伸的海廷和皮亚诺算术在所有有限型,加强早期的结果Moerdijk,Palmgren,Avigad和Helzner。我们还将指出我们的重写算法可以用于术语提取的目的。最后,我们将指出一些开放的问题和未来的研究方向,并提到一些初步的结果饱和原理。

英文摘要:

We introduce constructive and classical systems for nonstandard arithmetic and show how variants of the functional interpretations due to Goedel and Shoenfield can be used to rewrite proofs performed in these systems into standard ones. These functional interpretations show in particular that our nonstandard systems are conservative extensions of extensional Heyting and Peano arithmetic in all finite types, strengthening earlier results by Moerdijk, Palmgren, Avigad and Helzner. We will also indicate how our rewriting algorithm can be used for term extraction purposes. To conclude the paper, we will point out some open problems and directions for future research and mention some initial results on saturation principles.

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。

↑