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Register Games

Karoliina Lehtinen ; Udi Boker.

The complexity of parity games is a long standing open problem that saw a major breakthrough in 2017 when two quasi-polynomial algorithms were published. This article presents a third, independent approach to solving parity games in quasi-polynomial time, based on the notion of register game, a&nbsp;[&hellip;]

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Token Games and History-Deterministic Quantitative-Automata

Udi Boker ; Karoliina Lehtinen.

A nondeterministic automaton is history-deterministic if its nondeterminism can be resolved by only considering the prefix of the word read so far. Due to their good compositional properties, history-deterministic automata are useful in solving games and synthesis problems. Deciding whether a given&nbsp;[&hellip;]

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