How can we recover Baire class one functions?
نویسندگان
چکیده
منابع مشابه
Functions Whose Composition with Baire Class One Functions Are Baire Class One
We study the functions whose composition with Baire class one functions are Baire class one functions. We first prove some characterizations of such functions, then investigate a subclass of such functions which are defined in a natural way.
متن کاملCan We Recover the Cover?
Data analysis typically involves error recovery and detection of regularities as two different key tasks. In this paper we show that there are data types for which these two tasks can be powerfully combined. A common notion of regularity in strings is that of a cover. Data describing measures of a natural coverable phenomenon may be corrupted by errors caused by the measurement process, or by t...
متن کاملRanks 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 ...
متن کاملRecovering Baire One Functions on Ultrametric Spaces
We find a characterization of those Polish ultrametric spaces on which each Baire one function is first return recoverable. The notion of pseudo-convergence originating in the theory of valuation fields plays a crucial role in the characterization.
متن کاملHow can we enhance the value of laboratory tests?
Today, the pressures on the healthcare systems for the controlling of the costs are extreme and all sectors try to demonstrate the value of their services by justifying the activities and expenditures so the value can be describe in terms like quality, efficiency, effectiveness, patient satisfaction, cost effectiveness .The value of the lab testing is generally directed to their costs and the c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematika
سال: 2003
ISSN: 0025-5793,2041-7942
DOI: 10.1112/s0025579300014881