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Author

Ianovskaia Si

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Preprint Aug 2026

Nonlocality of Cover-Time Changes Under Edge Addition

Let $G$ be a finite connected simple graph, let $uv$ be a nonedge, and let $s$ be a starting vertex. We study the exact change in the expected cover time of simple random walk when $uv$ is inserted. A killed Green matrix update, combined with target-set inclusion-exclusion, gives an exact formula using only the origina...

Ianovskaia Si · 0 citations
Preprint Aug 2026

Strategic geometry of competing first-passage random walks

Two competitors choose starting vertices for independent, constant-speed random walks, and each site is acquired by its first visitor. We study the spatial geometry of the resulting first-passage location game. On every finite path the optimal strategies are exactly the distributions supported on the central vertices....

Ianovskaia Si · 0 citations

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