Abstract
Given an étale quotient q : X → Y of smooth projective varieties we relate the simple Seshadri constant of a line bundle M on Y with the multiple Seshadri constant of q * M in the points of the fiber. We apply this method to compute the Seshadri constant of polarized abelian surfaces in the points of a finite subgroup.
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García, L.F. Seshadri constants in finite subgroups of abelian surfaces. Geom Dedicata 127, 43–48 (2007). https://doi.org/10.1007/s10711-007-9154-8
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DOI: https://doi.org/10.1007/s10711-007-9154-8