Trisecting 4–manifolds
Trisecting 4–manifolds
复制标题
三等分4-流形
DOI:
10.2140/gt.2016.20.3097
复制
发表时间:
2012
影响因子:
2
通讯作者:
R. Kirby
中科院分区:
文献类型:
--
作者:
David T. Gay;R. Kirby
We show that any smooth, closed, oriented, connected 4‐manifold can be trisected into three copies of \ k .S 1 B 3 /, intersecting pairwise in 3‐dimensional handlebodies, with triple intersection a closed 2‐dimensional surface. Such a trisection is unique up to a natural stabilization operation. This is analogous to the existence, and uniqueness up to stabilization, of Heegaard splittings of 3‐manifolds. A trisection of a 4‐manifold X arises from a Morse 2‐function GW X! B 2 and the obvious trisection of B 2 , in much the same way that a Heegaard splitting of a 3‐manifold Y arises from a Morse function gW Y ! B 1 and the obvious bisection of B 1 .