Cite
HARVARD Citation
Hall, E. et al. (2013). The existence of free ultrafilters on ω does not imply the extension of filters on ω to ultrafilters. Mathematical logic quarterly. 59 (4), pp. 258-267. [Online].
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Hall, E. et al. (2013). The existence of free ultrafilters on ω does not imply the extension of filters on ω to ultrafilters. Mathematical logic quarterly. 59 (4), pp. 258-267. [Online].