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Counterexample to an extension of the Hanani-Tutte theorem on the surface of genus 4
Published 1 Sep 2017 in math.CO and cs.DM | (1709.00508v3)
Abstract: We find a graph of genus $5$ and its drawing on the orientable surface of genus $4$ with every pair of independent edges crossing an even number of times. This shows that the strong Hanani-Tutte theorem cannot be extended to the orientable surface of genus $4$. As a base step in the construction we use a counterexample to an extension of the unified Hanani-Tutte theorem on the torus.
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