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The closure of the set of periodic modules over a concealed canonical algebra is regular in codimension one

Let A be a concealed canonical algebra and d the dimension vector of an A-module which is periodic respect to the action of the Auslander-Reiten translation In the paper, we investigate the union of the closures of the orbits of the periodic A-modules of dimension vector d. We show that this set is closed and regular in codimension one.

preprint2016arXivOpen access

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