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PreLie-decorated hypertrees

Abstract : Weighted hypertrees have been used by C. Jensen, J. McCammond, and J. Meier to compute some Euler characteristics in group theory. We link them to decorated hypertrees and 2-coloured rooted trees. After the enumeration of pointed and non-pointed types of decorated hypertrees, we compute the character for the action of the symmetric group on these hypertrees.
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https://hal.inria.fr/hal-01229740
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Long-term archiving on: : Friday, April 28, 2017 - 2:42:50 PM

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  • HAL Id : hal-01229740, version 1

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Bérénice Oger. PreLie-decorated hypertrees. 25th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2013), 2013, Paris, France. pp.445-456. ⟨hal-01229740⟩

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