3 citations · 3 across the 2 of their papers we have counts for
4 papers · 1 filter
Remarks on ultrafilters exponentiation
Lorenzo Luperi Baglini, Boris Šobot
Recently, two exponentiations of ultrafilters have been introduced in [7]. We rephrase them in nonstandard terms, and use the nonstandard formulations to characterize some of their…
Multiplicative finite embeddability vs divisibility of ultrafilters
Boris Šobot
We continue the exploration of various aspects of divisibility of ultrafilters, adding one more relation to the picture: multiplicative finite embeddability. We show that it lies b…
Congruence of ultrafilters
Boris Šobot
We continue the research of the relation on the set of ultrafilters on , defined as an extension of the div…
Four Games on Boolean Algebras
Milos S. Kurilic, Boris Sobot
The games G_2 and G_3 are played on a complete Boolean algebra B in ω-many moves. At the beginning White picks a non-zero element p of B and, in the n-th move, White picks a positi…