Shin-ichi Matsumura

activity

20102026

most citedA general extension theorem for cohomology classes on non reduced analytic spaces

39 citations · 187 across the 37 of their papers we have counts for

collaborators

Showing 2020Show all

1 paper · 1 filter

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 $- K_{X / Y}$ of an algebraic fiber space $ϕ : X \to Y$ , and we reveal relations among positivity conditions of $- K_{X / Y}$ ,…