Baire Sets, Borel Sets and Some Typical Semi-Continuous Functions
نویسندگان
چکیده
منابع مشابه
Decomposing Borel Sets and Functions and the Structure of Baire Class 1 Functions
All spaces considered are metric separable and are denoted usually by the letters X, Y , or Z. ω stands for the set of all natural numbers. If a metric separable space is additionally complete, we call it Polish; if it is a continuous image of ω or, equivalently, of a Polish space, it is called Souslin. The main subject of the present paper is the structure of Baire class 1 functions. Recent de...
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ژورنال
عنوان ژورنال: Nagoya Mathematical Journal
سال: 1954
ISSN: 0027-7630,2152-6842
DOI: 10.1017/s0027763000018079