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arXiv · 0806.0872

Blow-up of generalized complex 4-manifolds

Gil R. Cavalcanti·Marco Gualtieri
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Abstract

We introduce blow-up and blow-down operations for generalized complex 4-manifolds. Combining these with a surgery analogous to the logarithmic transform, we then construct generalized complex structures on nCP2 # m \bar{CP2} for n odd, a family of 4-manifolds which admit neither complex nor symplectic structures unless n=1. We also extend the notion of a symplectic elliptic Lefschetz fibration, so that it expresses a generalized complex 4-manifold as a fibration over a two-dimensional manifold with boundary.

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Gil R. Cavalcanti, Marco Gualtieri. 2013-08-19. Blow-up of generalized complex 4-manifolds. https://doi.org/10.1112/jtopol%2Fjtp031

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