Abstract
Let \({{\mathbb G}L(2, \mathbb{H})}\) be the group of invertible 2 × 2 matrices over the division algebra \({\mathbb{H}}\) of quaternions. \({{\mathbb G}L(2, \mathbb{H})}\) acts on the hyperbolic 5-space as the group of orientation-preserving isometries. Using this action we give an algebraic characterization of the orientation-preserving isometries of the hyperbolic 5-space. Along the way we also determine the conjugacy classes and the conjugacy classes of centralizers or the z-classes in \({{\mathbb G}L(2, \mathbb{H})}\) .
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Gongopadhyay, K. Algebraic characterization of the isometries of the hyperbolic 5-space. Geom Dedicata 144, 157–170 (2010). https://doi.org/10.1007/s10711-009-9394-x
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DOI: https://doi.org/10.1007/s10711-009-9394-x