Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Primary 14M25, Secondary 14E30"'
Autor:
Fujino, Osamu, Sato, Hiroshi
For every complete toric variety, there exists a projective toric variety which is isomorphic to it in codimension one. In this paper, we show that every smooth non-projective complete toric threefold of Picard number at most five becomes projective
Externí odkaz:
http://arxiv.org/abs/2412.02392
Autor:
Fujino, Osamu, Sato, Hiroshi
We discuss lengths of extremal rational curves, Fujita's freeness, and the Kodaira vanishing theorem for log canonical toric foliated pairs.
Comment: 11 pages, v2: We have removed Conjecture 1.5. The authors thank Fanjun Meng very much for showi
Comment: 11 pages, v2: We have removed Conjecture 1.5. The authors thank Fanjun Meng very much for showi
Externí odkaz:
http://arxiv.org/abs/2410.17009
Autor:
Fujino, Osamu, Sato, Hiroshi
If a toric foliation on a projective Q-factorial toric variety has an extremal ray whose length is longer than the rank of the foliation, then the associated extremal contraction is a projective space bundle and the foliation is the relative tangent
Externí odkaz:
http://arxiv.org/abs/2309.09461
Autor:
Fujino, Osamu, Sato, Hiroshi
Publikováno v:
Nagoya Math. J. 239 (2020) 42-75
We give new estimates of lengths of extremal rays of birational type for toric varieties. We can see that our new estimates are the best by constructing some examples explicitly. As applications, we discuss the nefness and pseudo-effectivity of adjoi
Externí odkaz:
http://arxiv.org/abs/1710.05151
Autor:
Osamu Fujino, Hiroshi Sato
We give new estimates of lengths of extremal rays of birational type for toric varieties. We can see that our new estimates are the best by constructing some examples explicitly. As applications, we discuss the nefness and pseudo-effectivity of adjoi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9767589dda433d78d3d25a578a9ca5a
http://arxiv.org/abs/1710.05151
http://arxiv.org/abs/1710.05151