Abstract
In this paper, we study the linear systems $|-mK_X|$ on Fano varieties $X$ with klt singularities. In a given dimension $d$, we prove $|-mK_X|$ is non-empty and contains an element with ``good singularities" for some natural number m depending only on $d$; if in addition $X$ is $\epsilon$-lc for some $\epsilon > 0$, then we show that we can choose $m$ depending only on $d$ and $\epsilon$ so that $|-mK_X|$ defines a birational map. Further, we prove Shokurov's conjecture on boundedness of complements, and show that certain classes of Fano varieties form bounded families.
Citation
Caucher Birkar. "Anti-pluricanonical systems on Fano varieties." Ann. of Math. (2) 190 (2) 345 - 463, September 2019. https://doi.org/10.4007/annals.2019.190.2.1
Information