3 papers
math.LO2019
More number theory in
Boris Šobot
We continue the research of an extension of the divisibility relation to the Stone-\v Cech compactification . First we prove that ultrafilters we call prime…
math.LO2018
Divisibility in *N and
Boris Šobot
The paper first covers several properties of the extension of the divisibility relation to a set of nonstandard integers. After that, a connection is establi…
math.LO2017
-divisibility of ultrafilters
Boris Šobot
We further investigate a divisibility relation on the set of ultrafilters on the set of natural numbers. We single out prime ultrafilters (divisible only by 1 and themselves)…