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arxiv: 1102.4294 · v1 · pith:DGKUDW4Xnew · submitted 2011-02-21 · 🧮 math.AG

Virtual normalization and virtual fundamental classes

classification 🧮 math.AG
keywords betavirtualclassesfundamentalmapsmathfraknormalizationramified
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In this paper, we compare the virtual fundamental classes of the stacks of $(g,\beta,\mu)$-stable ramified maps $\bar{\mathfrak U}_{g,\mu}(X,\beta)$ and of $(g,\beta,\mu)$-log stable ramified maps $\bar{\mathfrak U}^{\mathrm{log}}_{g,\mu}(X,\beta)$. For that we will see how they are identified via virtual normalization and then apply Costello's push-forward formula.

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