Vol. 8, No. 6, 2014

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On moduli spaces for quasitilted algebras

Grzegorz Bobiński

Vol. 8 (2014), No. 6, 1521–1538

We prove that if a quasitilted algebra is tame, then the associated moduli spaces are products of projective spaces. Together with an earlier result of Chindris this gives a geometric characterization of the tame quasitilted algebras. In our proof we use knowledge of the representation theory of the tame quasitilted algebras and a construction of semi-invariants as determinants.

quasitilted algebra, moduli space, semi-invariant
Mathematical Subject Classification 2010
Primary: 16G10
Secondary: 16G60, 13A50
Received: 19 December 2013
Revised: 14 February 2014
Accepted: 14 June 2014
Published: 2 October 2014
Grzegorz Bobiński
Faculty of Mathematics and Computer Science
Nicolaus Copernicus University
Ulica Chopina 12/18
87-100 Toruń