The middle attic

From Cantor's Attic
Revision as of 15:37, 4 August 2015 by Aperson (Talk | contribs) (fixed links)

Jump to: navigation, search
St. Augustine Lighthouse photo by Madrigar

Welcome to the middle attic, where the uncountable cardinals, that solid stock of mathematics, begin their endless upward structural progession. Here, we survey the infinite cardinals whose existence can be proved in, or is at least equiconsistent with, the ZFC axioms of set theory.