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Article

On the multiplication map of a multigraded algebra

Mathematical Research Letters. 2007. Vol. 14. No. 1. P. 129-136.
Arzhantsev I., Hausen J.

Given a multigraded algebra A, it is a natural question whether or not for
two homogeneous components A_u and A_v, the product A_nuA_nv is the whole component
A_nu+nv for n big enough. We give combinatorial and geometric answers to this question.