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math.QA2024

Kontsevich's star-product up to order 7 for affine Poisson brackets: where are the Riemann zeta values?

Ricardo Buring, Arthemy V. Kiselev

The Kontsevich star-product admits a well-defined restriction to the class of affine -- in particular, linear -- Poisson brackets; its graph expansion consists only of Kontsevich's…