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arXiv · 2607.23351

On the Existence of Minimal Parametric Networks

Arsen Kh. Galstyan
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Abstract

The paper continues the investigation of conditions for the existence of minimal networks in metric spaces. We introduce the notion of a compactly equipped pseudometric space, in which every closed ball is equipped with a compact topology with respect to which the original pseudometric is lower semicontinuous. It is proved that these conditions are sufficient for the existence of minimal parametric networks of any type. This generalizes the corresponding theorems of Ivanov, Tropin and Tuzhilin on the existence of such networks in proper metric spaces. Moreover, it allows us to give a more general formulation of Bednov's theorem on sufficient conditions for the existence of minimal Steiner trees in Banach spaces. We also show which hyperspaces and under what conditions inherit this compactly equipped property.

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Arsen Kh. Galstyan. 2026-08-14. On the Existence of Minimal Parametric Networks. https://arxiv.org/abs/2607.23351

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