Let N be a set of natural numbers and Z be a set of integers. Let M₂(Z) denotes the set of all 2x2 matrices with integer entries. We give necessary and suficient conditions for solvability of the matrix negative Pell equation (P) X² - dY² = -I with d ∈ N for nonsingular X,Y belonging to M₂(Z) and his generalization (Pn) with d ∈ N for nonsingular , i=1,...,n.
@article{bwmeta1.element.bwnjournal-article-doi-10_7151_dmgaa_1150, author = {Aleksander Grytczuk and Izabela Kurzyd\l o}, title = {On the matrix negative Pell equation}, journal = {Discussiones Mathematicae - General Algebra and Applications}, volume = {29}, year = {2009}, pages = {35-45}, zbl = {1196.15013}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_7151_dmgaa_1150} }
Aleksander Grytczuk; Izabela Kurzydło. On the matrix negative Pell equation. Discussiones Mathematicae - General Algebra and Applications, Tome 29 (2009) pp. 35-45. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_7151_dmgaa_1150/
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