Links associated with generic immersions of graphs
Algebraic and Geometric Topology（2004）
摘要
As an extension of the class of algebraic links, A'Campo, Gibson, and
Ishikawa constructed links associated to immersed arcs and trees in a
two-dimensional disk. By extending their arguments, we construct links
associated to immersed graphs in a disk, and show that such links are
quasipositive.
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关键词
divide, graph divide, quasipositive link, slice Euler characteristic, four-dimensional clasp number
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