Languages vs. ω-languages in regular infinite games

  • Authors:
  • Namit Chaturvedi;Jörg Olschewski;Wolfgang Thomas

  • Affiliations:
  • Lehrstuhl Informatik 7, RWTH Aachen University, Germany;Lehrstuhl Informatik 7, RWTH Aachen University, Germany;Lehrstuhl Informatik 7, RWTH Aachen University, Germany

  • Venue:
  • DLT'11 Proceedings of the 15th international conference on Developments in language theory
  • Year:
  • 2011

Quantified Score

Hi-index 0.00

Visualization

Abstract

Infinite games are studied in a format where two players, called Player 1 and Player 2, generate a play by building up an ω-word as they choose letters in turn. A game is specified by the ω-language which contains the plays won by Player 2. We analyze ω-languages generated from certain classes κ of regular languages of finite words (called *-languages), using natural transformations of *-languages into ω-languages. Winning strategies for infinite games can be represented again in terms of *-languages. Continuing work of Selivanov (2007) and Rabinovich et al. (2007), we analyze how these "strategy *-languages" are related to the original language class κ. In contrast to that work, we exhibit classes κ where strategy representations strictly exceed κ.