BASES FOR FUNCTIONS BEYOND THE FIRST BAIRE CLASS
نویسندگان
چکیده
منابع مشابه
Ranks on the Baire Class Ξ Functions
In 1990 Kechris and Louveau developed the theory of three very natural ranks on the Baire class 1 functions. A rank is a function assigning countable ordinals to certain objects, typically measuring their complexity. We extend this theory to the case of Baire class ξ functions, and generalize most of the results from the Baire class 1 case. We also show that their assumption of the compactness ...
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ژورنال
عنوان ژورنال: The Journal of Symbolic Logic
سال: 2020
ISSN: 0022-4812,1943-5886
DOI: 10.1017/jsl.2020.60