On the conjecture of Athanasiadis related to freeness of a family of hyparplane arrangements

Details On the conjecture of Athanasiadis related to freeness of a family of hyparplane arrangements On the conjecture of Athanasiadis related to freeness of a family of hyparplane arrangements

2011-10-03

arxiv.org/abs/1110.0303v2

Mathematics

Combinatorics

6 pages, v2: minor revision

Scientific paper

We prove a characterization of freeness, conjectured by Athanasiadis, for the
family of hyperplane arrangements which lie between the Coxeter and the Catalan
arrangement of type $A_\ell$. One direction was already proved in [2]. Here we
prove the other direction

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