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Summary: Monotonic and Downward Closed
Games #
Parosh Aziz Abdulla
Uppsala University, Sweden
Ahmed Bouajjani
University of Paris 7, France
Julien d'Orso
University of Paris 7, France
Abstract
In an earlier work [A Ÿ
CJYK00] we presented a general framework for
verification of infinitestate transition systems, where the transition re
lation is monotonic with respect to a well quasiordering on the set of
states. In this paper, we investigate extending the framework from the
context of transition systems to that of games with infinite state spaces.
We show that monotonic games are in general undecidable. We identify
a subclass of monotonic games, called downward closed games. We pro
vide algorithms for analyzing downward closed games subject to winning
conditions which are formulated as safety properties.
1 Introduction
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