A uniform ultrafilter over a singular cardinal with a singular character
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DOI: 10.1007/s10474-020-01021-w
Abstract: We construct a model with a uniform ultrafilter U over a singular strong limit cardinal $$\kappa$$ κ such that $$\kappa < {\rm cof}({\rm Ch}(U))< {\rm Ch}(U)< 2^{\kappa}$$ κ < cof ( Ch ( U )… read more here.
Keywords: ultrafilter singular; singular cardinal; uniform ultrafilter; kappa ... See more keywords