R. Andruszkiewicz

collaborators

2 papers

math.RA2021

Ideal ring extensions and trusses

Ryszard R. Adruszkiewicz, Tomasz Brzeziński, Bernard Rybołowicz

It is shown that there is a close relationship between ideal extensions of rings and trusses, that is, sets with a semigroup operation distributing over a ternary abelian heap oper…

math.RA2020

Involutive solutions of the Yang-Baxter-like matrix equation -- theory and algorithms

Alicja Smoktunowicz, Ryszard R. Andruszkiewicz

We find all explicit involutive solutions $X \in C^{n \times n}$ of the Yang-Baxter-like matrix equation $A X A = X A X$ , where $A \in C^{n \times n}$ is a given involuto…