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arXiv 0801.1620math.GT
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任意三维流形中链环的着色Turaev-Viro不变量

On colored Turaev-Viro invariants for links in arbitrary 3-manifolds

Ekaterina Pervova, Carlo Petronio

摘要:

我们认为某些不变量的链接在3流形,通过特化的3流形的Turaev-维罗不变量,我们称之为彩色Turaev-维罗不变量。它们的构造是基于对(M,L)的表示,其中M是一个封闭的定向3-流形,L是M中的一个定向链,通过M的三角剖分使得L的每个分量都是一条边。我们分析了这些不变量的一些基本性质,包括对远离和沿链接的连接和下的行为。这些性质使我们能够提供在三个球面中具有相同的HOMFLY多项式和相同的考夫曼多项式但不同的Turaev-Viro不变量的链接的例子,以及亚历山大多项式的类似例子。我们还研究了(M,L)的Turaev-Viro不变量与L在M中的补不变量之间的关系,表明它们有时但不总是相互决定的.

英文摘要:

We consider certain invariants of links in 3-manifolds, obtained by a specialization of the Turaev-Viro invariants of 3-manifolds, that we call colored Turaev-Viro invariants. Their construction is based on a presentation of a pair (M,L), where M is a closed oriented 3-manifold and L is an oriented link in M, by a triangulation of M such that each component of L is an edge. We analyze some basic properties of these invariants, including the behavior under connected sums of pairs away and along links. These properties allow us to provide examples of links in the three-sphere having the same HOMFLY polynomial and the same Kauffman polynomial but distinct Turaev-Viro invariants, and similar examples for the Alexander polynomial. We also investigate the relations between the Turaev-Viro invariants of (M,L) and those of the complement of L in M, showing that they are sometimes but not always determined by each other.

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