On bivariate Archimedean copulas with fractal support

Due to their simple analytic form (bivariate) Archimedean copulas are usually viewed as very smooth and handy objects, which should distribute mass in a fairly regular and certainly not in a pathological way. Building upon recently established results on the Archimedean family and working with itera...

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Bibliographic Details
Main Authors: Sánchez Juan Fernández, Trutschnig Wolfgang
Format: Article
Language:English
Published: De Gruyter 2025-05-01
Series:Dependence Modeling
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Online Access:https://doi.org/10.1515/demo-2025-0013
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Summary:Due to their simple analytic form (bivariate) Archimedean copulas are usually viewed as very smooth and handy objects, which should distribute mass in a fairly regular and certainly not in a pathological way. Building upon recently established results on the Archimedean family and working with iterated function systems with probabilities, we falsify this natural conjecture and derive the surprising result that for every s∈s\hspace{0.33em}\in [1, 2] there exists some bivariate Archimedean copula As{A}_{s} fulfilling that the Hausdorff dimension of the support of As{A}_{s} is exactly ss.
ISSN:2300-2298