5 citations · 5 across the 1 of their papers we have counts for
3 papers
math.AG2020★ 5 cited
On asymptotic base loci of relative anti-canonical divisors of algebraic fiber spaces
Sho Ejiri, Masataka Iwai, Shin-ichi Matsumura
In this paper, we study the relative anti-canonical divisor of an algebraic fiber space , and we reveal relations among positivity conditions of ,…
math.AG2020
Subadditivity of Kodaira dimension does not hold in positive characteristic
Paolo Cascini, Sho Ejiri, János Kollár +1
Over any algebraically closed field of positive characteristic, we construct examples of fibrations violating subadditivity of Kodaira dimension.
math.AG2018
Nef anti-canonical divisors and rationally connected fibrations
Sho Ejiri, Yoshinori Gongyo
We study the Iitaka-Kodaira dimension of nef relative anti-canonical divisors. As a consequence, we prove that given a complex projective variety with klt singularities, if the ant…