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math.LO2019
Corson reflections
Ilijas Farah, Menachem Magidor
A reflection principle for Corson compacta holds in the forcing extension obtained by Levy-collapsing a supercompact cardinal to~. In this model, a compact Hausdorff spac…
math.LO2019★ 1 cited
Between reduced powers and ultrapowers
Ilijas Farah
We prove that there exists a nonprincipal ultrafilter on such that for every countable (or separable) structure in a countable language the quotient ma…