The parametric ordinal-recursive complexity of post embedding problems

  • Authors:
  • Prateek Karandikar;Sylvain Schmitz

  • Affiliations:
  • CMI, Chennai, India, LSV, ENS Cachan & CNRS, Cachan, France;LSV, ENS Cachan & CNRS, Cachan, France

  • Venue:
  • FOSSACS'13 Proceedings of the 16th international conference on Foundations of Software Science and Computation Structures
  • Year:
  • 2013

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Abstract

Post Embedding Problems are a family of decision problems based on the interaction of a rational relation with the subword embedding ordering, and are used in the literature to prove non multiply-recursive complexity lower bounds. We refine the construction of Chambart and Schnoebelen (LICS 2008) and prove parametric lower bounds depending on the size of the alphabet.