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arXiv · 2608.13124

Limits of mapping packages and Preiss's phenomenon

Milica Caković·Elefterios Soultanis
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Abstract

We show the existence of ultralimits of sequences of Hajlasz-Sobolev maps $f_i:X_i\to Y_i$ when $X_i$ converges to a limit space in the pointed measured Gromov (pmG) sense, partially extending recent results in [T. Ikonen and S. Wenger, (2026), arXiv:2603.05246]. We moreover demonstrate that the graphs $G(f_i)$ of the mappings pmG-converge to the graph of the ultralimit in a suitable sense. The latter fact stems from a suitable Arzela-Ascoli theorem in the context of pmG-convergence. As an application, we establish a version of Preiss's phenomenon for mapping packages $f:(X,\mu)\to V$ into arbitrary Banach spaces. Besides extending it to maps into infinite dimensional targets, our result generalizes existing versions of Preiss's phenomenon [G. C. David, Geom. Funct. Anal., 25 (2015)], [N. Gigli, A. Mondino, and T. Rajala, J. Reine Angew. Math., 705 (2015)] by establishing it for pointed measured Gromov-Hausdorff tangents without a doubling assumption.

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Milica Caković, Elefterios Soultanis. 2026-08-13. Limits of mapping packages and Preiss's phenomenon. https://arxiv.org/abs/2608.13124

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