三重层上Kähler-里奇流的有限时间坍缩
Finite time collapsing of the Kähler-Ricci flow on threefolds
摘要:
我们证明了如果在紧致Kahler三重流形上存在Kahler-里奇流的一个解,且该解遇到一个有限时间坍缩奇点,则该流形存在Fano纤维化.此外,如果存在有限时间灭绝,则流形是Fano,并且初始类是第一个Chern类的正倍数。
英文摘要:
We show that if on a compact Kahler threefold there is a solution of the Kahler-Ricci flow which encounters a finite time collapsing singularity, then the manifold admits a Fano fibration. Furthermore, if there is finite time extinction then the manifold is Fano and the initial class is a positive multiple of the first Chern class.
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