3 citations · 3 across the 3 of their papers we have counts for
3 papers
math.ST2026
Random discrete copulas
Damjana Kokol Bukovšek, Blaž Mojškerc, Nik Stopar
We introduce the notion of a bivariate random discrete copula on an equidistant mesh and explore its stochastic properties. A random discrete copula is a discrete random field, hen…
math.ST2023★ 3 cited
Quasi-copulas as linear combinations of copulas
Gregor Dolinar, Bojan Kuzma, Nik Stopar
We prove that every quasi-copula can be written as a uniformly converging infinite sum of multiples of copulas. Furthermore, we characterize those quasi-copulas which can be writte…
math.RA2015
Nilpotent, algebraic and quasi-regular elements in rings and algebras
N. Stopar
We prove that an integral Jacobson radical ring is always nil, which extends a well known result from algebras over fields to rings. As a consequence we show that if every element…