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We study residues on a complete toric variety X, which are defined in terms of the homogeneous coordinate ring of X.We first prove a global transformation law for toric residues. When the fan of the t...
Rank 2 Integrable Systems of Prym Varieties.
Toric Ideals, Real Toric Varieties, and the Algebraic Moment Map
Geometric modeling projective after surface after surface linear projection
2014/12/29
This is a tutorial on some aspects of toric varieties related to their potential use in geometric modeling. We discuss projective toric varieties and their ideals, as well as real toric varieties. In ...
Normality of nilpotent varieties in E-6
Nilpotent orbit function the orbit of nilpotent E6
2014/12/29
We determine which nilpotent orbits in E6 have closures which are normal varieties and which do not. At the same time we are able to verify a conjecture in [E. Sommers, Comm. Math. Univ. Sancti Pauli ...
On quiver varieties and affine Grassmanians of type A
Quiver varieties affine nilpotent orbit duality
2014/12/29
We construct Nakajima's quiver varieties of type A in terms of affine Grassmannians of type A. This gives a compactification of quiver varieties and a decomposition of affine Grassmannians into a disj...
Normality of very even nilpotent varieties in D-2l
Meet the nilpotent orbit closures natural number
2014/12/29
For the classical groups, Kraft and Procesi have resolved the question of which nilpotent orbits have closures that are normal and which do not, with the exception of the very even orbits in D2l that ...
Restriction of A-discriminants and dual defect toric varieties
Variable characterization Gail double double defect classification
2014/12/25
We study the A-discriminant of toric varieties. We reduce its computation to the case of irreducible configurations and describe its behavior under specialization of some of the variables to zero. We ...
TWO VARIETIES OF INDUSTRIAL POLICY：A CRITIQUE
INDUSTRIAL POLICY Industrial development growth rate
2008/12/8
Introduction
Should a special agency be established and invested with the
responsibility of explicitly guiding our nation’s Industrial development?
Clearlythe growth rate of our economy Is not what...
Orthogonal arrays from Hermitian varieties。