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Discrete free products of two complex cyclic matrix groups
Published online by Cambridge University Press: 18 May 2009
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All 2-by-2 matrices in this paper are to be viewed as linear fractional transformations on the extended complex plane ℂ*. Let L+ and L− be the open half-planes to the right and left, respectively, of the extended imaginary axis L. Let Λ be the set of complex 2-by-2 matrices A with real trace and determinant ±1 such that A(L+) ⊂L−. Let Ω = Ω1 ∪ Ω2 ∪ Ω3 ∪ Ω4, Where
and
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- Copyright © Glasgow Mathematical Journal Trust 1979
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