Possan cair-uillinagh

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Ayns maddaght, y possan cair-uillinagh keim n er rheam F (screeut myr O(n,F)), shen possan jeh n-rish-n matricksyn cair-uillinagh as fys F ayndaue, as yn obbyr possanagh yl-raghey matricks oc. She fo-phossan jeh'n phossan cadjin linnagh GL(n,F) t'ayn, rere:

\mathrm{O}(n,F) = \{ Q \in \mathrm{GL}(n,F) \mid Q^T Q = Q Q^T = I \}

as QT ny vaylartey Q. Son y chooid smoo, t'ad screeu y possan cair-uillinagh claddisagh er ny feer earrooyn myr O(n).


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