English

Subset Sum Instances in ZFC Limbo

Combinatorics 2021-11-01 v2

Abstract

Our main result, Theorem 2.5, shows the existence of a vast infinity of subset sum problems solvable in polynomial time. The only proof we have of this result uses the ZFC independent Jump Free Theorem of Harvey Friedman, thus putting Theorem 2.5 in what we call ZFC limbo. The mathematics we use is elementary and at the level of a good undergraduate course in combinatorics or design and analysis of algorithms. The statement of the Jump Free Theorem is also easily understood at this level (but not the proof).

Keywords

Cite

@article{arxiv.2012.05385,
  title  = {Subset Sum Instances in ZFC Limbo},
  author = {S. Gill Williamson},
  journal= {arXiv preprint arXiv:2012.05385},
  year   = {2021}
}
R2 v1 2026-06-23T20:51:35.773Z