Languages vs. ω-Languages in Regular Infinite Games

نویسندگان

  • Namit Chaturvedi
  • Jörg Olschewski
  • Wolfgang Thomas
چکیده

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 K 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 Rabinovich et al. and of Selivanov (2007), we analyze how these “strategy ∗-languages” are related to the original language class K. In contrast to that work, we exhibit classes K where the strategy representations strictly exceed K.

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تاریخ انتشار 2011