Zentralblatt MATH
Publications of (and about) Paul Erdös
Zbl.No: 192.40304
Autor: Erdös, Pál; Stone, A.H.
Title: On the sum of two Borel sets (In English)
Source: Proc. Am. Math. Soc. 25, 304-306 (1970).
Review: It is shown that the linear sum of two Borel subsets of the real line need not be Borel, even if one of them is compact and the other is G\delta. This result is extended to a fairly wide class of connected topological groups.
Classif.: * 04A15 Descriptive set theory
28A05 Classes of sets
Index Words: Analysis
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