Odeljenje za matematiku, 22. februar 2019.

• 21. Februar,  2019
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Naredni sastanak Seminara biće održan u petak, 22. februara 2019. u sali 301f Matematičkog instituta SANU sa početkom u 14:15.

Predavač: Dilip Raghavan, National University of Singapore

Naslov predavanja: A SMALL ULTRAFILTER NUMBER

Apstrakt: It is proved to be consistent relative to a measurable cardinal that there is a uniform ultrafilter on the real numbers which is generated by fewer than the maximum possible number of sets. It is also shown to be consistent relative to a supercompact cardinal that there is a uniform ultrafilter on ${aleph}_{omega+1}$ which is generated by fewer than ${2}^{{aleph}_{omega+1}}$ sets.

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