Generalized toric varieties for simple non-rational convex polytopes
Battaglia, Fiammetta ; Prato, Elisa
HAL, hal-00019448 / Harvested from HAL
We call complex quasifold of dimension k a space that is locally isomorphic to the quotient of an open subset of the space C^k by the holomorphic action of a discrete group; the analogue of a complex torus in this setting is called a complex quasitorus. We associate to each simple polytope, rational or not, a family of complex quasifolds having same dimension as the polytope, each containing a dense open orbit for the action of a suitable complex quasitorus. We show that each of these spaces M is diffeomorphic to one of the symplectic quasifolds defined in http://arXiv.org/abs/math:SG/9904179, and that the induced symplectic structure is compatible with the complex one, thus defining on M the structure of a Kaehler quasifold. These spaces may be viewed as a generalization of the toric varieties that are usually associated to those simple convex polytopes that are rational.
Publié le : 2001-07-05
Classification:  [MATH.MATH-CV]Mathematics [math]/Complex Variables [math.CV],  [MATH.MATH-AG]Mathematics [math]/Algebraic Geometry [math.AG],  [MATH.MATH-CO]Mathematics [math]/Combinatorics [math.CO],  [MATH.MATH-DG]Mathematics [math]/Differential Geometry [math.DG],  [MATH.MATH-SG]Mathematics [math]/Symplectic Geometry [math.SG]
@article{hal-00019448,
     author = {Battaglia, Fiammetta and Prato, Elisa},
     title = {Generalized toric varieties for simple non-rational convex polytopes},
     journal = {HAL},
     volume = {2001},
     number = {0},
     year = {2001},
     language = {en},
     url = {http://dml.mathdoc.fr/item/hal-00019448}
}
Battaglia, Fiammetta; Prato, Elisa. Generalized toric varieties for simple non-rational convex polytopes. HAL, Tome 2001 (2001) no. 0, . http://gdmltest.u-ga.fr/item/hal-00019448/