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arXiv · 1603.03890

On the existence of a Gysin morphism for the Blow-up of an ordinary singularity

Vincenzo Di Gennaro·Davide Franco
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Abstract

In this paper we characterize the Blowing-up maps of ordinary singularities for which there exists a natural Gysin morphism, i.e. a bivariant class $\theta \in Hom_{D(Y)}(R\pi_*\mathbb Q_X, \mathbb Q_Y)$, compatible with pullback and with restriction to the complement of the singularity.

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Vincenzo Di Gennaro, Davide Franco. 2016-03-12. On the existence of a Gysin morphism for the Blow-up of an ordinary singularity. https://arxiv.org/abs/1603.03890

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