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Given positive edge lengths $\ell(e)$, the path metric is the infimum of $\sum_{e\in\gamma}\ell(e)$ over paths $\gamma$ joining two vertices.


Path metric

Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 215 / 4 / a / i / Solution

Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 215 / 4 / b / iii / Solution

Path metric ( $ρ$ )

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Path metric (ρ)

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Path metric ( $ρ$ )

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