The spider's-web conjecture for the quite fast escaping set

Let ff be a transcendental entire function of order less than 1/21/2. For each ε>0\varepsilon>0, define

με(r)=M(r)ε,\mu_{\varepsilon}(r)=M(r)^{\varepsilon},

where M(r)M(r) is the maximum modulus, and let Q(f)Q(f) be the quite fast escaping set obtained from the iterates of με\mu_{\varepsilon}. A spider's web is a connected set containing boundaries of a nested sequence of bounded simply connected domains whose union is the whole plane.

Quite fast escaping set conjecture. The set Q(f)Q(f) contains a spider's web. Consequently, I(f)I(f) is a spider's web and is connected.

The conjecture extends results for several families of entire functions of order less than 1/21/2. The authors state that they know no counterexamples, while the assertion remains open in general.

Sources & referencesView supporting material

Primary source

Daniel A. Nicks, Philip J. Rippon and Gwyneth M. Stallard, “Eremenko's conjecture for functions with real zeros: the role of the minimum modulus”, arXiv:1810.07814 (2018).

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