2 papers
math.CO2014
Hypertree posets and hooked partitions
Bérénice Oger
We adapt here the computation of characters on incidence Hopf algebras introduced by W. Schmitt in the 1990s to a family mixing bounded and unbounded posets. We then apply our resu…
math.CO2012
Action of the symmetric groups on the homology of the hypertree posets
Bérénice Oger
The set of hypertrees on vertices can be endowed with a poset structure. J. McCammond and J. Meier computed the dimension of the unique non zero homology group of the hypertree…