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Nicole Wein

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Preprint Sep 2026

Exponential Lower Bounds for Integer-Weighted Shortest-Paths Preservers of DAGs

We study a graph simplification problem introduced by Bernstein, Bodwin, and Wein [ITCS'24]. We start with a graph with arbitrarily large positive edge weights and the goal is to reweight the edges to small aspect ratio (ratio between largest and smallest weight) while preserving the shortest paths structure (the seque...

Michael Yi Wang, Nicole Wein · 0 citations

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