Surgery formulae for Casson's invariant and extensions to homology lens spaces.
Surgery formulae for Casson's invariant and extensions to homology lens spaces.
复制标题
卡森不变量的手术公式和同调透镜空间的扩展。
DOI:
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发表时间:
1990
期刊:
影响因子:
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通讯作者:
S. Boyer
中科院分区:
文献类型:
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作者:
D. Lines;S. Boyer
Andrew Casson has defmed an integral invariant λ of Z-homology 3-spheres which satisfies an important Dehn surgery formula (see [AM] or [M]) for surgery on knots in Z-homology 3-spheres. In this article we derive a formula for the Casson invariant of a manifold resulting from surgery on a 2-component link (theorem (3. 6)). For surgery on a general framed link we determine the Casson invariant up to framed link homotopy (theorem (1. 3)). These results allow us to extend Casson's invariant to homology lens spaces. Before describing this extension we introduce some notation.