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TEST MAP AND DISCRETENESS IN SL(2, ℍ)
Published online by Cambridge University Press: 07 August 2018
Abstract
Let ℍ be the division ring of real quaternions. Let SL(2, ℍ) be the group of 2 × 2 quaternionic matrices $A={\scriptsize{(\begin{array}{l@{\quad}l} a & b \\ c & d \end{array})}}$ with quaternionic determinant det A = |ad − aca−1b| = 1. This group acts by the orientation-preserving isometries of the five-dimensional real hyperbolic space. We obtain discreteness criteria for Zariski-dense subgroups of SL(2, ℍ).
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- Copyright © Glasgow Mathematical Journal Trust 2018
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