paper

On the arithmetic self-intersection number of the dualizing sheaf on arithmetic surfaces

arXiv:0906.2056

Abstract

We study the arithmetic self-intersection number of the dualizing sheaf on arithmetic surfaces with respect to morphisms of a particular kind. We obtain upper bounds for the arithmetic self-intersection number of the dualizing sheaf on minimal regular models of the modular curves associated with congruence subgroups with square free level, as well as for the modular curves X(N) and the Fermat curves with prime exponent.

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