Abstract
We present a short proof of the existence of universal functions for period-doubling and critical golden-mean circle maps for all degrees of criticality \(d \gt 1\). The method is based on H. Epstein's Herglotz-function technique.
Citation
Benjamin D. Mestel. "A Short Proof of the Existence of Universal Functions." Real Anal. Exchange 38 (2) 425 - 430, 2012/2013.
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