2019•arXiv (Cornell University)Open access
Upper bounds on the graph minor theorem
Martin Krombholz, Michael Rathjen
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Abstract
Lower bounds on the proof-theoretic strength of the graph minor theorem were found over 30 years ago by Friedman, Robertson and Seymour 1987, but upper bounds have always been elusive. We present recently found upper bounds on the graph minor theorem and other theorems appearing in the Graph Minors series. Further, we give some ideas as to how the lower bounds on some of these theorems might be improved.
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