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arXiv · 2602.14984

Large expander subgraphs in high genus triangulations

Tanguy Lions·Baptiste Louf
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Abstract

We prove that random triangulations of high genus contain very large expander subgraphs, answering a question of Benjamini. Our approach relies on new general criteria for arbitrary graphs to contain large expander subgraphs.

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Tanguy Lions, Baptiste Louf. 2026-02-17. Large expander subgraphs in high genus triangulations. https://arxiv.org/abs/2602.14984

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