pic 1 complexity

18.24 Corollary. Let X be an n-dimensional Fano variety with p(X) = 1 and let Y2 biBi be a Q-divisor such that Kx + ^2 b{B{ is lc and numerically trivial Then £ bi < dimX + 1. In particular, Sn(fano) has bounded sums.

(page) (Kollár, p. 206)