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arxiv 2410.02545 v1 pith:IBGIRUHQ submitted 2024-10-03 math.CO cs.DMmath.PR

The bunkbed conjecture is false

classification math.CO cs.DMmath.PR
keywords bunkbedconjecturecounterexamplebuiltexplicitfalsegivegiven
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We give an explicit counterexample to the Bunkbed Conjecture introduced by Kasteleyn in 1985. The counterexample is given by a planar graph on $7222$ vertices, and is built on the recent work of Hollom (2024).

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