2 citations · 3 across the 4 of their papers we have counts for
4 papers
On the problem of M-hyperquasivarieties
Ewa Graczynska
The aim of the paper is to present a solution of the problem 32 posed by K. Denecke, S.L. Wismath in: {\it Hyperidentities and clones}, Logic and Applications Vol. 14, Gordon and B…
The dimension of a variety
Ewa Graczyńska, Dietmar Schweigert
We invent the notion of a {\it dimension of a variety} as the cardinality of all its proper {\it derived} subvarieties (of the same type). The dimensions of varieties of lattic…
Fluid varieties
Ewa Graczynska, Dietmar Schweigert
We invent the notion of a derived and fluid variety. Fluid variety has no proper derived variety as its subvariety. We examine some properties of fluid and derived varieties. Examp…
On the problem of basis for hyperquasivarieties
Ewa Wanda Graczynska
In the paper we presnt a solution of problem 31 of chaptr 8 of the monograph of K. Denecke and S. L. Wismath: Hypridentities and clones, Gordon & Breach, 2000, by presnting two mai…