Low linear orderings
نویسنده
چکیده
We say that L is weakly η-like if L/∼ is isomorphic to the natural ordering of rational numbers. We construct a computable presentation of any low weakly η-like linear ordering with no strongly η-like interval. Also we prove that there exists a noncomputably presentable low2 weakly η-like linear ordering with no strongly η-like interval.
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ورودعنوان ژورنال:
- J. Log. Comput.
دوره 22 شماره
صفحات -
تاریخ انتشار 2012