Trisections of 4-manifolds. (English) Zbl 1421.57030

Summary: This article serves as an introduction to the special feature “Trisections of 4-manifolds” of the Proceedings of the National Academy of Sciences of the United States of America. It is an introduction to trisections of 4-manifolds, a notion that parallels the notion of a Heegaard splitting in dimension 4. It gives the basic notions, some historical background and brief summaries of the contents of the following articles in this special feature.


57N13 Topology of the Euclidean \(4\)-space, \(4\)-manifolds (MSC2010)
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