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arxiv: 1209.3571 · v4 · pith:DEZKG3UGnew · submitted 2012-09-17 · 🧮 math.AG

On the slope of fourgonal semistable fibrations

classification 🧮 math.AG
keywords curvesfourgonalslopealgebraicbogomolov-typeboundbundlesfibrations
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We bound the slope of sweeping curves in the fourgonal locus of the moduli space of genus g algebraic curves. Our results follow from some Bogomolov-type inequalities for weakly positive rank two vector bundles on ruled surfaces.

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