One can write divisors D as a difference of two nef divisors. In the toric context, this translates into the formal difference of two polytopes P-Q. It is possible to express the cohomology of O(D) via these two polytopes. In my talk I will show how this approach can be generalized to vector bundles E of higher rank. Using the language of Weil decorations, the cohomology of E will be related to the cohomology of a constructible sheaf. This is joint work with Klaus Altmann and Frederik Witt.
Link: https://unipd.zoom.us/j/82518660070?pwd=RUpxL1FnZG9yVzFrOCtrM0xYMEZaZz09
Meeting ID: 825 1866 0070
Password: 62542
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