Nicoara, Remus; White, Joseph Second order deformations of group commuting squares and Hadamard matrices. (English) Zbl 1459.46058 Proc. Am. Math. Soc. 148, No. 9, 3967-3974 (2020). MSC: 46L37 15B34 PDFBibTeX XMLCite \textit{R. Nicoara} and \textit{J. White}, Proc. Am. Math. Soc. 148, No. 9, 3967--3974 (2020; Zbl 1459.46058) Full Text: DOI
Nicoară, Remus; White, Joseph Analytic deformations of group commuting squares and complex Hadamard matrices. (English) Zbl 1360.15035 J. Funct. Anal. 272, No. 8, 3486-3505 (2017). MSC: 15B34 15A30 PDFBibTeX XMLCite \textit{R. Nicoară} and \textit{J. White}, J. Funct. Anal. 272, No. 8, 3486--3505 (2017; Zbl 1360.15035) Full Text: DOI
Nicoara, Remus; White, Joseph The defect of a group-type commuting square. (English) Zbl 1389.46078 Rev. Roum. Math. Pures Appl. 59, No. 2, 245-254 (2014). MSC: 46L37 15B34 20D60 PDFBibTeX XMLCite \textit{R. Nicoara} and \textit{J. White}, Rev. Roum. Math. Pures Appl. 59, No. 2, 245--254 (2014; Zbl 1389.46078)
Nicoara, Remus; White, Joseph Twisted commuting squares. (English) Zbl 1281.46054 Int. J. Math. 24, No. 5, Article ID 1350036, 14 p. (2013). MSC: 46L37 15B34 PDFBibTeX XMLCite \textit{R. Nicoara} and \textit{J. White}, Int. J. Math. 24, No. 5, Article ID 1350036, 14 p. (2013; Zbl 1281.46054) Full Text: DOI