Ershov层次超限层中的弱密度和非密度

IF 0.6 3区数学 Q2 LOGIC

Notre Dame Journal of Formal Logic Pub Date : 2020-11-01 DOI:10.1215/00294527-2020-0023

Yong Liu, Cheng Peng

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引用次数: 1

摘要

我们证明了对于任意ω- re。d阶和n阶。当d本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Weak Density and Nondensity among Transfinite Levels of the Ershov Hierarchy

We show that for any ω-r.e. degree d and n-r.e. degree b with d

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来源期刊

Notre Dame Journal of Formal Logic MATHEMATICS-LOGIC

CiteScore

1.00

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Notre Dame Journal of Formal Logic, founded in 1960, aims to publish high quality and original research papers in philosophical logic, mathematical logic, and related areas, including papers of compelling historical interest. The Journal is also willing to selectively publish expository articles on important current topics of interest as well as book reviews.