A surgery formula for the 2-loop piece of the LMO invariant of a pair
A surgery formula for the 2-loop piece of the LMO invariant of a pair
复制标题
一对 LMO 不变量的 2 环部分的手术公式
DOI:
10.2140/gtm.2002.4.161
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发表时间:
2002
影响因子:
0.5
通讯作者:
A. Kricker
中科院分区:
文献类型:
--
作者:
A. Kricker
Let Θ(M,K) denote the 2-loop piece of (the logarithm of) the LMO invariant of a knot K in M , a ZHS . Forgetting the knot (by which we mean setting diagrams with legs to zero) specialises Θ(M,K) to λ(M), Casson’s invariant. This note describes an extension of Casson’s surgery formula for his invariant to Θ(M,K). To be precise, we describe the effect on Θ(M,K) of a surgery on a knot which together with K forms a boundary link in M . Whilst the presented formula does not characterise Θ(M,K), it does allow some insight into the underlying topology. AMS Classification 57M27; 57M25