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Hyers-Ulam stability of parabolic Möbius difference equation (1708.08656v2)

Published 29 Aug 2017 in math.DS

Abstract: The linear fractional map $ g(z) = \frac{az+ b}{cz + d} $ on the Riemann sphere with complex coefficients $ ad-bc = 1 $ is and $ a+d = \pm 2 $, then $ g $ is called {\em parabolic} M\"obius map. Let $ { b_n }{n \in \mathbb{N}_0} $ be the solution of the parabolic M\"obius difference equation $ b{n+1} = g(b_n) $ for every $ n \in \mathbb{N}0 $. We show that the sequence $ { b_n }{n \in \mathbb{N}_0} $ has no Hyers-Ulam stability.

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