A short proof of the middle levels theorem
Discrete analysis (2018)
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Consider the graph that has as vertices all bitstrings of length $2n+1$ with exactly $n$ or $n+1$ entries equal to 1, and an edge between any two bitstrings that differ in exactly one bit. The well-known middle levels conjecture asserts that this graph has a Hamilton cycle for any $n\geq 1$. In this paper we present a new proof of this conjecture, which is much shorter and more accessible than the original proof.
@article{DAS_2018_a13,
author = {Petr Gregor and Torsten M\"utze and Jerri Nummenpalo},
title = {A short proof of the middle levels theorem},
journal = {Discrete analysis},
year = {2018},
language = {en},
url = {http://geodesic.mathdoc.fr/item/DAS_2018_a13/}
}
Petr Gregor; Torsten Mütze; Jerri Nummenpalo. A short proof of the middle levels theorem. Discrete analysis (2018). http://geodesic.mathdoc.fr/item/DAS_2018_a13/