3 papers
math.AG2023
Symmetries of Fano varieties
Louis Esser, Lena Ji, Joaquín Moraga
We study Fano varieties endowed with a faithful action of a symmetric group, as well as analogous results for Calabi--Yau varieties, and log terminal singularities. We show the exi…
math.AG2023
The fibering genus of Fano hypersurfaces
Nathan Chen, Benjamin Church, Lena Ji +1
Kollár proved that a very general -dimensional complex hypersurface of degree at least is not birational to a fibration in rational curves. This is most…
math.AC2016
Completely Controlling the Dimensions of Formal Fiber Rings at Prime Ideals of Small Height
Sarah M. Fleming, Lena Ji, S. Loepp +3
Let be a complete equicharacteristic local (Noetherian) UFD of dimension or greater. Assuming that , where is the maximal ideal of , we construct a loca…