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20 votes
3 answers
2k views

Ordering of large cardinals by cardinality

Let Type A and Type B be two types of large cardinals from, say, Cantor's Attic (http://cantorsattic.info/Upper_attic) Now assuming that ZFC + Type A + Type B is consistent (ie, both Type A and Type …
Cosmonut's user avatar
  • 801
13 votes
4 answers
1k views

Large cardinal consistency strength and size

My understanding is that large cardinals are ordered by "consistency strength", but how does this correlate with their size (cardinality)? More specifically, are there any systematic results on the l …
Cosmonut's user avatar
  • 801
6 votes
1 answer
1k views

Replacing Axiom of Choice with Axiom of Countable Choice

Many people find ACC more intuitive than AC ("Pick something from the first set, then something from the second set, then...) and it also doesn't lead to "controversial consequences" (See for eg: Pecu …
Cosmonut's user avatar
  • 801
2 votes
1 answer
1k views

Wholeness Axiom and Ultimate L

From what I understand: The Wholeness Axiom(s) is/are the "ultimate axioms of infinity", bordering on inconsistency with ZFC. Ultimate L (Completion of ZFC) attempts to extend the orderly world of c …
Cosmonut's user avatar
  • 801