Urbano's conjecture on uniformly generated divisorial sheaves
Urbano's conjecture on uniformly generated divisorial sheaves
Let be a projective normal variety, and let be a . A divisor on is very ample if its complete linear system defines a closed embedding of into projective space.
Urbano's conjecture. There exists a very ample divisor such that is globally generated for every .
The conjecture asserts a uniform linear ample twist that makes all positive multiples of a rational Weil divisor globally generated. The supplied text recalls it from Urbano; no resolution is given here.
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Sources & referencesView supporting material
Primary source
Stefano Urbinati, “Divisorial models of normal varieties”, arXiv:1211.1692 (2015).
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