×

A note on Blackwell spaces. (English) Zbl 0568.28001

The authors show, using the Martin Axiom, a simple but witty example of a Blackwell space which is not strongly Blackwell. This solves a problem of K. P. S. Bhaskara Rao and B. V. Rao under \(MA_{\aleph_ 1}\).
Reviewer: P.Holicky

MSC:

28A05 Classes of sets (Borel fields, \(\sigma\)-rings, etc.), measurable sets, Suslin sets, analytic sets
54H05 Descriptive set theory (topological aspects of Borel, analytic, projective, etc. sets)
03E50 Continuum hypothesis and Martin’s axiom
03E15 Descriptive set theory
PDF BibTeX XML Cite