Larcombe, Peter J.; Fennessey, Eric J. A short graph-theoretic proof of the \(2 \times 2\) matrix anti-diagonals ratio invariance with exponentiation. (English) Zbl 1464.15014 Palest. J. Math. 10, No. 1, 102-103 (2021). MSC: 15A16 05C20 PDFBibTeX XMLCite \textit{P. J. Larcombe} and \textit{E. J. Fennessey}, Palest. J. Math. 10, No. 1, 102--103 (2021; Zbl 1464.15014) Full Text: Link
Larcombe, Peter J.; Fennessey, Eric J. On anti-diagonals ratio invariance with exponentiation of a \(2 \times 2\) matrix: two new proofs. (English) Zbl 1439.11093 Palest. J. Math. 9, No. 1, 12-14 (2020). MSC: 11C20 PDFBibTeX XMLCite \textit{P. J. Larcombe} and \textit{E. J. Fennessey}, Palest. J. Math. 9, No. 1, 12--14 (2020; Zbl 1439.11093) Full Text: Link
Larcombe, Peter J.; Fennessey, Eric J. A note on two rational invariants for a particular \(2 \times 2\) matrix. (English) Zbl 1394.11023 Palest. J. Math. 7, No. 2, 410-413 (2018). MSC: 11C20 15A99 PDFBibTeX XMLCite \textit{P. J. Larcombe} and \textit{E. J. Fennessey}, Palest. J. Math. 7, No. 2, 410--413 (2018; Zbl 1394.11023) Full Text: Link
Larcombe, Peter J.; Fennessey, Eric J. A new tri-diagonal matrix invariance property. (English) Zbl 1375.11027 Palest. J. Math. 7, No. 1, 9-13 (2018). MSC: 11C20 PDFBibTeX XMLCite \textit{P. J. Larcombe} and \textit{E. J. Fennessey}, Palest. J. Math. 7, No. 1, 9--13 (2018; Zbl 1375.11027) Full Text: Link