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Compact 4-manifolds admitting special handle decompositions
Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas ( IF 1.8 ) Pub Date : 2021-05-15 , DOI: 10.1007/s13398-021-01001-x
Maria Rita Casali , Paola Cristofori

In this paper we study colored triangulations of compact PL 4-manifolds with empty or connected boundary which induce handle decompositions lacking in 1-handles or in 1- and 3-handles, thus facing also the problem, posed by Kirby, of the existence of special handle decompositions for any simply-connected closed PL 4-manifold. In particular, we detect a class of compact simply-connected PL 4-manifolds with empty or connected boundary, which admit such decompositions and, therefore, can be represented by (undotted) framed links. Moreover, this class includes any compact simply-connected PL 4-manifold with empty or connected boundary having colored triangulations that minimize the combinatorially defined PL invariants regular genus, gem-complexity or G-degree among all such manifolds with the same second Betti number.



中文翻译:

紧凑的4流形,允许特殊的手柄分解

在本文中,我们研究具有空或连接边界的致密PL 4流形的有色三角剖分,这些三角形导致在1个手柄或1个和3个手柄中缺乏手柄分解,因此也面临Kirby所存在的问题。任何简单连接的封闭式PL 4流形的特殊手柄分解。特别是,我们检测到一类具有空的或相连的边界的紧致简单连接的PL 4流形,它允许这种分解,因此可以用(未分配)框架链接表示。此外,此类包括任何紧凑的简单连接的PL 4流形,具有空的或连接的边界,带有彩色三角剖分,可最小化组合定义的PL不变量常规属,宝石复杂度G度 在所有具有相同第二贝蒂数的歧管中。

更新日期:2021-05-15
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