The hierarchy of omega1-Borel sets

Details The hierarchy of omega1-Borel sets The hierarchy of omega1-Borel sets

2011-07-25

arxiv.org/abs/1107.5022v1

Mathematics

Logic

LaTex2e: 12 pages Latest version at: http://www.math.wisc.edu/~miller

Scientific paper

The family omega1-Borel sets is the smallest family of subsets of the real
line which contains the family of open sets and is closed under complementation
and omega1 unions. We show:
Theorem 1. MA+notCH implies this hierarchy has length omega2.
Theorem 2. In the Cohen real model it has length either omega1+1 or omega1+2.

Affiliated with

Also associated with

No associations

Rating

The hierarchy of omega1-Borel sets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The hierarchy of omega1-Borel sets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The hierarchy of omega1-Borel sets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-573552