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Timed Parity Games: Complexity and Robustness

Krishnendu Chatterjee ; Thomas A. Henzinger ; Vinayak S. Prabhu.

We consider two-player games played in real time on game structures with clocks where the objectives of players are described using parity conditions. The games are \emph{concurrent} in that at each turn, both players independently propose a time delay and an action, and the action with the shorter&nbsp;[&hellip;]

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Aspect-oriented linearizability proofs

Soham Chakraborty ; Thomas A. Henzinger ; Ali Sezgin ; Viktor Vafeiadis.

Linearizability of concurrent data structures is usually proved by monolithic simulation arguments relying on the identification of the so-called linearization points. Regrettably, such proofs, whether manual or automatic, are often complicated and scale poorly to advanced non-blocking concurrency&nbsp;[&hellip;]

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Algorithms for Omega-Regular Games with Imperfect Information

Krishnendu Chatterjee ; Laurent Doyen ; Thomas A. Henzinger ; Jean-Francois Raskin.

We study observation-based strategies for two-player turn-based games on graphs with omega-regular objectives. An observation-based strategy relies on imperfect information about the history of a play, namely, on the past sequence of observations. Such games occur in the synthesis of a controller&nbsp;[&hellip;]

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Quantitative Automata under Probabilistic Semantics

Krishnendu Chatterjee ; Thomas A. Henzinger ; Jan Otop.

Automata with monitor counters, where the transitions do not depend on counter values, and nested weighted automata are two expressive automata-theoretic frameworks for quantitative properties. For a well-studied and wide class of quantitative functions, we establish that automata with monitor&nbsp;[&hellip;]

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Determinacy in Discrete-Bidding Infinite-Duration Games

Milad Aghajohari ; Guy Avni ; Thomas A. Henzinger.

In two-player games on graphs, the players move a token through a graph to produce an infinite path, which determines the winner of the game. Such games are central in formal methods since they model the interaction between a non-terminating system and its environment. In bidding games the players&nbsp;[&hellip;]

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