On the (ir)rationality of Kontsevich weights

2008/08/31 by Giovanni Felder, Thomas Willwacher · 1 citation
Mathematics · #math.QA #msc:53D55 #msc:11M06

paper · pdf

published as Int. Math. Res. Notices 2010 (4), 701--716

arxiv created 2008/09/11 · arxiv updated 2014/01/16

Abstract

We compute the weight of a Kontsevich graph in deformation quantization. Up to rationals, the result is Zeta(3)²/Pi⁶.

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• A Formality quasi-isomorphism for Hochschild cochains over rationals can be constructed recursively

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