Fixpoints, games and the difference hierarchy

Julian C. Bradfield

RAIRO - Theoretical Informatics and Applications (2010)

  • Volume: 37, Issue: 1, page 1-15
  • ISSN: 0988-3754

Abstract

top
Drawing on an analogy with temporal fixpoint logic, we relate the arithmetic fixpoint definable sets to the winning positions of certain games, namely games whose winning conditions lie in the difference hierarchy over Σ 2 0 . This both provides a simple characterization of the fixpoint hierarchy, and refines existing results on the power of the game quantifier in descriptive set theory. We raise the problem of transfinite fixpoint hierarchies.

How to cite

top

Bradfield, Julian C.. "Fixpoints, games and the difference hierarchy." RAIRO - Theoretical Informatics and Applications 37.1 (2010): 1-15. <http://eudml.org/doc/92711>.

@article{Bradfield2010,
abstract = { Drawing on an analogy with temporal fixpoint logic, we relate the arithmetic fixpoint definable sets to the winning positions of certain games, namely games whose winning conditions lie in the difference hierarchy over $\Sigma^0_2$. This both provides a simple characterization of the fixpoint hierarchy, and refines existing results on the power of the game quantifier in descriptive set theory. We raise the problem of transfinite fixpoint hierarchies. },
author = {Bradfield, Julian C.},
journal = {RAIRO - Theoretical Informatics and Applications},
keywords = {Descriptive set theory; fixpoint; game quantifier; induction.; Gale-Steward games; mu-arithmetic; parity games; modal mu-calculus; arithmetic fixpoint definable sets; difference hierarchy; fixpoint hierarchy; descriptive set theory; transfinite fixpoint hierarchies},
language = {eng},
month = {3},
number = {1},
pages = {1-15},
publisher = {EDP Sciences},
title = {Fixpoints, games and the difference hierarchy},
url = {http://eudml.org/doc/92711},
volume = {37},
year = {2010},
}

TY - JOUR
AU - Bradfield, Julian C.
TI - Fixpoints, games and the difference hierarchy
JO - RAIRO - Theoretical Informatics and Applications
DA - 2010/3//
PB - EDP Sciences
VL - 37
IS - 1
SP - 1
EP - 15
AB - Drawing on an analogy with temporal fixpoint logic, we relate the arithmetic fixpoint definable sets to the winning positions of certain games, namely games whose winning conditions lie in the difference hierarchy over $\Sigma^0_2$. This both provides a simple characterization of the fixpoint hierarchy, and refines existing results on the power of the game quantifier in descriptive set theory. We raise the problem of transfinite fixpoint hierarchies.
LA - eng
KW - Descriptive set theory; fixpoint; game quantifier; induction.; Gale-Steward games; mu-arithmetic; parity games; modal mu-calculus; arithmetic fixpoint definable sets; difference hierarchy; fixpoint hierarchy; descriptive set theory; transfinite fixpoint hierarchies
UR - http://eudml.org/doc/92711
ER -

References

top
  1. U. Bosse, An ``Ehrenfeucht-Fraïssé game" for fixpoint logic and stratified fixpoint logic, in Computer science logic. San Miniato, Lecture Notes in Comput. Sci. 702 (1992) 100-114.  
  2. J.C. Bradfield, The modal mu-calculus alternation hierarchy is strict. Theoret. Comput. Sci.195 (1997) 133-153.  
  3. J.C. Bradfield, Fixpoint alternation and the game quantifier, in Proc. CSL '99. Lecture Notes in Comput. Sci. 1683 (1999) 350-361.  
  4. J.R. Büchi, Using determinancy of games to eliminate quantifers, in Proc. FCT '77. Lecture Notes in Comput. Sci. 56 (1977) 367-378.  
  5. J.P. Burgess, Classical hierarchies from a modern standpoint. I. C-sets. Fund. Math.115 (1983) 81-95.  
  6. E.A. Emerson and C.S. Jutla, Tree automata, mu-calculus and determinacy, in Proc. FOCS 91 (1991).  
  7. P.G. Hinman, The finite levels of the hierarchy of effective R-sets. Fund. Math.79 (1973) 1-10.  
  8. P.G. Hinman, Recursion-Theoretic Hierarchies. Springer, Berlin (1978).  
  9. R.S. Lubarsky, µ-definable sets of integers. J. Symb. Logic58 (1993) 291-313.  
  10. Y.N. Moschovakis, Descriptive Set Theory. North-Holland, Amsterdam (1980).  
  11. D. Niwinski, Fixed point characterization of infinite behavior of finite state systems. Theoret. Comput. Sci.189 (1997) 1-69.  
  12. V. Selivanov, Fine hierarchy of regular ω-languages. Theoret. Comput. Sci.191 (1998) 37-59.  

NotesEmbed ?

top

You must be logged in to post comments.

To embed these notes on your page include the following JavaScript code on your page where you want the notes to appear.

Only the controls for the widget will be shown in your chosen language. Notes will be shown in their authored language.

Tells the widget how many notes to show per page. You can cycle through additional notes using the next and previous controls.

    
                

Note: Best practice suggests putting the JavaScript code just before the closing </body> tag.