On global Okounkov bodies of spherical varieties
2017 | preprint. A publication with affiliation to the University of Göttingen.
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- Authors
- Pezzini, Guido; Seppänen, Henrik
- Abstract
- We define and study the global Okounkov moment cone of a projective spherical variety X, generalizing both the global Okounkov body and the moment body of X defined by Kaveh and Khovanskii. Under mild assumptions on X we show that the global Okounkov moment cone of X is rational polyhedral. As a consequence, also the global Okounkov body of X, with respect to a particular valuation, is rational polyhedral.
- Issue Date
- 2017
- Organization
- Mathematisches Institut