Del Pezzo surfaces and Mori fiber spaces in positive characteristic
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DOI: 10.1090/tran/7988
Abstract: We settle a question that originates from results and remarks by Koll\'ar on extremal ray in the minimal model program: In positive characteristics, there are no Mori fibrations on threefolds with only terminal singularities whose… read more here.
Keywords: pezzo surfaces; mori fiber; surfaces mori; del pezzo ... See more keywords
Birational Mori fiber structures of Q -Fano 3-fold weighted complete intersections, III
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DOI: 10.1215/21562261-2019-0048
Abstract: This is a continuation of a series of papers studying the birational Mori fiber structures of anticanonically embedded Q-Fano 3-fold weighted complete intersections of codimension 2. We have proved that 19 families consists of birationally… read more here.
Keywords: birational mori; fold weighted; fano fold; mori fiber ... See more keywords