Thin position and essential planar surfaces
Thin position and essential planar surfaces
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薄的位置和必要的平面
DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
Ying‐Qing Wu
中科院分区:
文献类型:
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作者:
Ying‐Qing Wu
Abby Thompson proved that if a link K is in thin position but not in bridge position, then the knot complement contains an essential meridional planar surface, and she asked whether some thin level surface must be essential. This note is to give a positive answer to this question, showing that if a link is in thin position but not bridge position, then a thinnest level surface is essential. A theorem of Rieck and Sedgwick follows as a consequence, which says that thin position of a connected sum of small knots comes in the obvious way.