Bifurcation Loci of Exponential Maps and Quadratic Polynomials: Local Connectivity, Triviality of Fibers, and Density of Hyperbolicity

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dc.creatorRempe, Lasse
dc.creatorSchleicher, Dierk
dc.date2008-05-12
dc.date.accessioned2026-07-07T12:31:45Z
dc.date.available2026-07-07T12:31:45Z
dc.descriptionWe study the bifurcation loci of quadratic (and unicritical) polynomials and exponential maps. We outline a proof that the exponential bifurcation locus is connected; this is an analog to Douady and Hubbard's celebrated theorem that (the boundary of) the Mandelbrot set is connected. For these parameter spaces, a fundamental conjecture is that hyperbolic dynamics is dense. For quadratic polynomials, this would follow from the famous stronger conjecture that the bifurcation locus (or equivalently the Mandelbrot set) is locally connected. It turns out that a formally slightly weaker statement is sufficient, namely that every point in the bifurcation locus is the landing point of a parameter ray. For exponential maps, the bifurcation locus is not locally connected. We describe a different conjecture (triviality of fibers) which naturally generalizes the role that local connectivity has for quadratic or unicritical polynomials.
dc.description20 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0805.1658
dc.identifierhttp://arxiv.org/abs/0805.1658
dc.identifierin: Fields Institute Communications Volume 53: Holomorphic dynamics and renormalization. A volume in honour of John Milnor's 75th birthday (Lyubich et al, eds), 177-196 (2008).
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216555
dc.subjectDynamical Systems
dc.subjectComplex Variables
dc.subject37F45 (primary); 30D05, 37F10, 37F20 (secondary)
dc.titleBifurcation Loci of Exponential Maps and Quadratic Polynomials: Local Connectivity, Triviality of Fibers, and Density of Hyperbolicity
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