Linear lower bound on degrees of Positivstellensatz calculus proofs for the parity

Autor: Dima Grigoriev
Přispěvatelé: Grigoriev, Dima, Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2001
Předmět:
Zdroj: Theoretical Computer Science
Theoretical Computer Science, Elsevier, 2001
ISSN: 0304-3975
1879-2294
DOI: 10.1016/s0304-3975(00)00157-2
Popis: In this paper we establish a linear (thereby, sharp) lower bound on degrees of Positivstellensatz calculus refutations over a real field introduced in Grigoriev and Vorobjov (Ann. Pure Appl. Logic, to appear), for the Tseitin tautologies and for the parity (the mod 2 principle). We use the machinery of the Laurent proofs developed for binomial systems in Buss et al. (Proc. 31st Ann. ACM Symp. on Theory of Computing, 1999, pp. 547–556; J. Comput. Systems Sci., to appear).
Databáze: OpenAIRE