English

On some $\Sigma^{B}_{0}$-formulae generalizing counting principles over $V^{0}$

Logic 2024-07-16 v7

Abstract

We formalize various counting principles and compare their strengths over V0V^{0}. In particular, we conjecture the following mutual independence between: (1) a uniform version of modular counting principles and the pigeonhole principle for injections, (2) a version of the oddtown theorem and modular counting principles of modulus pp, where pp is any natural number which is not a power of 22, (3) and a version of Fisher's inequality and modular counting principles. Then, we give sufficient conditions to prove them. We give a variation of the notion of PHPPHP-tree and kk-evaluation to show that any Frege proof of the pigeonhole principle for injections admitting the uniform counting principle as an axiom scheme cannot have o(n)o(n)-evaluations. As for the remaining two, we utilize well-known notions of pp-tree and kk-evaluation and reduce the problems to the existence of certain families of polynomials witnessing violations of the corresponding combinatorial principles with low-degree Nullstellensatz proofs from the violation of the modular counting principle in concern.

Cite

@article{arxiv.2203.10237,
  title  = {On some $\Sigma^{B}_{0}$-formulae generalizing counting principles over $V^{0}$},
  author = {Eitetsu Ken},
  journal= {arXiv preprint arXiv:2203.10237},
  year   = {2024}
}

Comments

46 pages, no figures, master's thesis of the author at the University of Tokyo with modifications. The title is modified. Section 2.2, Proposition 61, and Theorem 75 are added. The proof of Theorem 53 is modified (the original proof wrongly applied the Chinese Remainder Theorem). Theorems 67 and 77 are improved, and the degree upper bounds are constant now

R2 v1 2026-06-24T10:18:59.097Z