26 citations · 53 across the 14 of their papers we have counts for
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math.RA2024
When does an infinite ring have a finite compressed commuting graph?
Ivan-Vanja Boroja, Damjana Kokol Bukovšek, Nik Stopar
We show that any infinite ring has an infinite nonunital compressed commuting graph. We classify all infinite unital rings with finite unital compressed commuting graph, using semi…
math.ST2024
Freedom in constructing quasi-copulas vs. copulas
Matjaž Omladič, Nik Stopar
The main goal of this paper is to study the extent of freedom one has in constructing quasi-copulas vs. copulas. Specifically, it exhibits three construction methods for quasi-copu…
math.ST2024
Bivariate measure-inducing quasi-copulas
Nik Stopar
It is well known that every bivariate copula induces a positive measure on the Borel -algebra on , but there exist bivariate quasi-copulas that do not induce a signed m…