On the conjecture of Athanasiadis related to freeness of a family of hyparplane arrangements
Abe, Takuro
Original · EN
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 Aℓ. One direction was already proved in [2]. Here we prove the other direction
English translation
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