Andrica, Dorin; Călugăreanu, Grigore Uniquely clean \(2 \times 2\) invertible integral matrices. (English) Zbl 1399.15042 Stud. Univ. Babeș-Bolyai, Math. 62, No. 3, 287-293 (2017). MSC: 15B36 11D45 PDFBibTeX XMLCite \textit{D. Andrica} and \textit{G. Călugăreanu}, Stud. Univ. Babeș-Bolyai, Math. 62, No. 3, 287--293 (2017; Zbl 1399.15042) Full Text: DOI
Andrica, Dorin; Călugăreanu, Grigore A nil-clean \(2\times 2\) matrix over the integers which is not clean. (English) Zbl 1294.16019 J. Algebra Appl. 13, No. 6, Article ID 1450009, 9 p. (2014). MSC: 16S50 16N40 16U60 16U80 PDFBibTeX XMLCite \textit{D. Andrica} and \textit{G. Călugăreanu}, J. Algebra Appl. 13, No. 6, Article ID 1450009, 9 p. (2014; Zbl 1294.16019) Full Text: DOI