master's thesis

"Strong limits and inaccessibility with non-wellorderable powersets''

My master's thesis at the ILLC. The thesis discusses four notions of inaccessibility that are equivalent in ZFC. It is shown that three of them are pairwise not equivalent in ZF alone. The separation of the fourth notion comes from Blass and it's discussed in the resulting paper. The main technique used is the technique of symmetric models. Its publication number in the ILLC publication series is MoL-2006-3.