213 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Nagoya UniversityJP13 papers
- Obayashi (Japan)JP9 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP8 papers
- The University of TokyoJP6 papers
- Nagoya University HospitalJP5 papers
- Princeton UniversityUS5 papers
- Chiba UniversityJP4 papers
- Argonne National LaboratoryUS3 papers
- Carnegie Mellon UniversityUS3 papers
- Institute of Astronomy and Astrophysics, Academia SinicaTW3 papers
- Inter-University Centre for Astronomy and AstrophysicsIN3 papers
- Kyoto UniversityJP3 papers
7 papers · 1 filter
Note on quasi-numerically positive log canonical divisors
Shigetaka Fukuda
We propose a subconjecture that implies the semiampleness conjecture for quasi-numerically positive log canonical divisors and prove the semiampleness in some elementary cases.
Three-dimensional terminal toric flips
Osamu Fujino, Hiroshi Sato, Yukishige Takano +1
We describe three-dimensional terminal toric flips. We obtain the complete local description of three-dimensional terminal toric flips.
Algebraic fiber space whose generic fiber and base space are of almost general type
Shigetaka Fukuda
We assume that the existence and termination conjecture for flips holds. A complex projective manifold is said to be {\it of almost general type} if the intersection number of the…
Three-dimensional toric morphisms with anti-nef canonical divisors
Hiroshi Sato
In this paper, we classify projective toric birational morphisms from Gorenstein toric 3-folds onto the 3-dimensional affine space with relatively ample anti-canonical divisors.
On log canonical divisors that are log quasi-numerically positive
Shigetaka Fukuda
Let be a four-dimensional log variety that is projective over the field of complex numbers. Assume that is not Kawamata log terminal (klt) but divisorial log term…
Decomposition of log crepant birational morphisms between log terminal surfaces
Shigetaka Fukuda
We prove that every log crepant birational morphism between log terminal surfaces is decomposed into log-flopping type divisorial contraction morphisms and log blow-downs. Repeatin…
A Base Point Free Theorem of Reid Type, II
Shigetaka Fukuda
Let be a complete algebraic variety over {\bf C}. We consider a log variety that is weakly Kawamata log terminal. We assume that is a {\bf Q}-Cartier {\bf Q}-di…