Algebraic & Geometric Topology
- Algebr. Geom. Topol.
- Volume 6, Number 3 (2006), 1239-1265.
Kähler decomposition of 4–manifolds
In this article we show that every closed oriented smooth 4–manifold can be decomposed into two codimension zero submanifolds (one with reversed orientation) so that both pieces are exact Kähler manifolds with strictly pseudoconvex boundaries and that induced contact structures on the common boundary are isotopic. Meanwhile, matching pairs of Lefschetz fibrations with bounded fibers are offered as the geometric counterpart of these structures. We also provide a simple topological proof of the existence of folded symplectic forms on 4–manifolds.
Algebr. Geom. Topol., Volume 6, Number 3 (2006), 1239-1265.
Received: 13 May 2006
Accepted: 26 June 2006
First available in Project Euclid: 20 December 2017
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Baykur, R Inanç. Kähler decomposition of 4–manifolds. Algebr. Geom. Topol. 6 (2006), no. 3, 1239--1265. doi:10.2140/agt.2006.6.1239. https://projecteuclid.org/euclid.agt/1513796576