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arxiv: math/9906179 · v1 · submitted 1999-06-26 · 🧮 math.AG

Numerical invariants for bundles on blow-ups

classification 🧮 math.AG
keywords bundlesinvariantsnumericalblown-upblow-upscalculatedecompositiondivisor
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We suggest an effective procedure to calculate numerical invariants for rank two bundles over blown-up surfaces. We study the moduli spaces M_j of bundles on the blown-up plane splitting over the exceptional divisor as O(j)+O(-j). We use the numerical invariants to give a topological decomposition of M_j.

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