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arxiv: 0901.3894 · v1 · pith:PGONQ5QWnew · submitted 2009-01-25 · 🧮 math.CO

An improved linear bound on the number of perfect matchings in cubic graphs

classification 🧮 math.CO
keywords perfectboundcubicmatchingsbridgelessconstantdiffersdimension
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We show that every cubic bridgeless graph with n vertices has at least 3n/4-10 perfect matchings. This is the first bound that differs by more than a constant from the maximal dimension of the perfect matching polytope.

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