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Ryutaro Misawa

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Preprint Oct 2026

Quantizing Delsarte Theory

We develop Delsarte theory for quantum association schemes, allowing both composition and the quantum Schur product to be noncommutative. A MacWilliams identity and positivity of the inner and dual distributions yield conic upper bounds for codes and lower bounds for designs in terms of effective size, which extends su...

Ryutaro Misawa · 0 citations