Unique games and games based on groups

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• Rupert Levene (University College Dublin)
• Wednesday 02 July 2025, 14:00-15:00
• External.

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TGAW01 - Crossed products and groupoid C*-algebras

We consider nonlocal 2-player games which are “unique”, in the sense that each player has a unique winning answer determined by a referee’s question pair and the other player’s answer. We show that such a game has a perfect vect-strategy (or quantum strategy) if and only if it has a perfect deterministic strategy, estimate some game values using C*-algebras and discuss games based on groups, which generalise the XOR games. This is joint work with Vern Paulsen.

This talk is part of the Isaac Newton Institute Seminar Series series.

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