Positivity for Weil divisors

Positivity for Weil divisors

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Alberto Chiecchio , University of Washington
Fine Hall 322

We define and study positivity (nefness, amplitude, bigness and pseudo-effectiveness) for Weil divisors on normal projective varieties. We prove various characterizations, vanishing and non-vanishing theorems for cohomology, global generations statements, and a result related to log Fano. Joint work with S. Urbinati.