Martin's axiom and Δ21 well-ordering of the reals

Uri Abraham, Saharon Shelah

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Assuming an inaccessible cardinal κ, there is a generic extension in which MA + 2א0 = κ holds and the reals have a Δ21 well-ordering.

Original languageEnglish
Pages (from-to)287-298
Number of pages12
JournalArchive for Mathematical Logic
Issue number5-6
StatePublished - 1 Jan 1996

ASJC Scopus subject areas

  • Philosophy
  • Logic


Dive into the research topics of 'Martin's axiom and Δ21 well-ordering of the reals'. Together they form a unique fingerprint.

Cite this