3 papers
cs.DM2017
On some difficulties in the addition of trapezoidal ordered fuzzy numbers
Anna Łyczkowska-Hanćkowiak, Krzysztof Piasecki
At the first, we revise the Kosinski definition of the sum of ordered fuzzy numbers. The associativity of revised sum is investigated here. In addition, we show that the multiple r…
q-fin.MF2016
Black-Litterman model with intuitionistic fuzzy posterior return
Krzysztof Echaust, Krzysztof Piasecki
The main objective is to present a some variant of the Black - Litterman model. We consider the canonical case when priori return is determined by means such excess return from the…
q-fin.GN2013
Basis of financial arithmetic from the viewpoint of the utility theory
Krzysztof Piasecki
The main goal of this paper is presentation a modern axiomatic approach to financial arithmetic. At the first, the axiomatic financial arithmetic theory was proposed by Peccati who…