Prodanov, Emil M. Classification of the real roots of the quartic equation and their Pythagorean tunes. (English) Zbl 1499.12001 Int. J. Appl. Comput. Math. 7, No. 6, Paper No. 218, 14 p. (2021). MSC: 12D10 26C10 11D41 PDFBibTeX XMLCite \textit{E. M. Prodanov}, Int. J. Appl. Comput. Math. 7, No. 6, Paper No. 218, 14 p. (2021; Zbl 1499.12001) Full Text: DOI arXiv
Anghel, Nicolae Square roots of real \(3 \times 3\) matrices vs. quartic polynomials with real zeros. (English) Zbl 1424.15013 An. Științ. Univ. “Ovidius” Constanța, Ser. Mat. 25, No. 3, 45-58 (2017). MSC: 15A16 12D10 26C10 30C15 PDFBibTeX XMLCite \textit{N. Anghel}, An. Științ. Univ. ``Ovidius'' Constanța, Ser. Mat. 25, No. 3, 45--58 (2017; Zbl 1424.15013) Full Text: DOI