Banica, Teodor Complex Hadamard matrices with noncommutative entries. (English) Zbl 1405.46050 Ann. Funct. Anal. 9, No. 3, 354-368 (2018). MSC: 46L65 15B34 PDFBibTeX XMLCite \textit{T. Banica}, Ann. Funct. Anal. 9, No. 3, 354--368 (2018; Zbl 1405.46050) Full Text: DOI arXiv Euclid
Banica, Teodor; Nechita, Ion Flat matrix models for quantum permutation groups. (English) Zbl 1376.16028 Adv. Appl. Math. 83, 24-46 (2017). MSC: 16T05 46L54 17B37 PDFBibTeX XMLCite \textit{T. Banica} and \textit{I. Nechita}, Adv. Appl. Math. 83, 24--46 (2017; Zbl 1376.16028) Full Text: DOI arXiv