Authors: Franc Forstnerič Marko Slapar
Publish Date: 2007/01/06
Volume: 256, Issue: 3, Pages: 615-646
Abstract
We prove that every continuous map from a Stein manifold X to a complex manifold Y can be made holomorphic by a homotopic deformation of both the map and the Stein structure on X In the absence of topological obstructions the holomorphic map may be chosen to have pointwise maximal rank The analogous result holds for any compact Hausdorff family of maps but it fails in general for a noncompact family Our main results are actually proved for smooth almost complex source manifolds XJ with the correct handlebody structure The paper contains another proof of Eliashberg’s Int J Math 129–46 1990 homotopy characterization of Stein manifolds and a slightly different explanation of the construction of exotic Stein surfaces due to Gompf Ann Math 1482 619–693 1998 J Symplectic Geom 3565–587 2005
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