An elementary proof that the Borel class of the reals has cardinality continuum

DOI10.1007/S10474-019-00986-7zbMath1449.28003OpenAlexW2972081136MaRDI QIDQ2330062

Zoltán Kánnai

Publication date: 18 October 2019

Published in: Acta Mathematica Hungarica (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s10474-019-00986-7

zbMATH Keywords

Borel setintersection principle of hullsSolovay's encoding

Mathematics Subject Classification ID

Descriptive set theory (03E15) Classes of sets (Borel fields, (sigma)-rings, etc.), measurable sets, Suslin sets, analytic sets (28A05)

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