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Title:
Higher genus Grothendieck-Teichmüller Lie algebras
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Abstract:
The Grothendieck-Teichmüller Lie algebra grt was introduced by Drinfeld and is a mysterious object which has many applications in algebra, geometry and topology. An important result by Willwacher identifies grt with the degree zero cohomology of Kontsevich's graph complex GC, itself an interesting combinatorial object whose cohomology in positive degrees is unknown.
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