Diasamidze, Yasha; Makharadze, Shota; Rokva, Nino; Diasamidze, Ilia Complete semigroups of binary relations whose set of regular elements is a semigroup. (English) Zbl 1283.20066 Bull. Georgian Natl. Acad. Sci. (N.S.) 2, No. 2, 17-23 (2008). MSC: 20M20 PDFBibTeX XMLCite \textit{Y. Diasamidze} et al., Bull. Georgian Natl. Acad. Sci. (N.S.) 2, No. 2, 17--23 (2008; Zbl 1283.20066)
Diasamidze, Yasha; Makharadze, Shota; Rokva, Nino On \(XI\)-semilattices of unions. (English) Zbl 1245.06006 Bull. Georgian Natl. Acad. Sci. (N.S.) 2, No. 1, 16-24 (2008). MSC: 06A12 20M20 PDFBibTeX XMLCite \textit{Y. Diasamidze} et al., Bull. Georgian Natl. Acad. Sci. (N.S.) 2, No. 1, 16--24 (2008; Zbl 1245.06006) Full Text: Link