Abstract
The local theory of complex dimensions for real and \(p\)-adic fractal strings describes oscillations that are intrinsic to the geometry, dynamics and spectrum of archimedean and nonarchimedean fractal strings. We aim to develop a global theory of complex dimensions for adèlic fractal strings in order to reveal the oscillatory nature of adèlic fractal strings and to understand the Riemann hypothesis in terms of the vibrations and resonances of fractal strings. We present a simple and natural construction of self-similar \(p\)-adic fractal strings of any rational fractal (i.e., Minkowski) dimension in the closed unit interval \([0,1]\). Moreover, as a first step towards a global theory of complex dimensions for adèlic fractal strings, we construct an adèlic Cantor string in the set of finite adèles \(\mathbb{A}_0\) as an infinite Cartesian product of every \(p\)-adic Cantor string, as well as an adèlic Cantor-Smith string in the ring of adèles \(\mathbb{A}\) as a Cartesian product of the general Cantor string and the adèlic Cantor string.
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Notes
From his paradise Cantor with us unfolded, we hold our breath in awe, knowing we shall not be expelled.
Here, \(|x|_{\infty}\) denotes the usual absolute value of \(x\in \mathbb{Q}^*\).
Two absolute values on \(\mathbb Q\) are said to be equivalent if one is a positive power of the other.
From a technical point of view, both infinite products are really ‘restricted products’.
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Funding
The work of the first author (MLL) was partially supported by the US National Science Foundation (NSF) under the research grants DMS-0707524 and DMS-1107750, and by the Burton Jones Endowed Chair in Pure Mathematics (of which MLL was the chair holder at the University of California, Riverside, during the completion of this paper).
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Lapidus, M.L., Hùng, L. & van Frankenhuijsen, M. \(p\)-Adic Fractal Strings of Arbitrary Rational Dimensions and Cantor Strings. P-Adic Num Ultrametr Anal Appl 13, 215–230 (2021). https://doi.org/10.1134/S2070046621030043
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DOI: https://doi.org/10.1134/S2070046621030043