Browsing 1 - Oberwolfach Preprints (OWP) by Subject "Combinatorics"
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Hopf Algebras in Combinatorics, Volume 1
[OWP-2020-14] (Mathematisches Forschungsinstitut Oberwolfach, 2020-07-29) -
Hopf Algebras in Combinatorics, Volume 2
[OWP-2020-15] (Mathematisches Forschungsinstitut Oberwolfach, 2020-07-30) -
Inductive Freeness of Ziegler’s Canonical Multiderivations for Reflection Arrangements
[OWP-2017-14] (Mathematisches Forschungsinstitut Oberwolfach, 2017-04-30)Let $A$ be a free hyperplane arrangement. In 1989, Ziegler showed that the restriction $A''$ of $A$ to any hyperplane endowed with the natural multiplicity is then a free multiarrangement. We initiate a study of the stronger ...