On knot adjacency
On knot adjacency
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DOI:
10.1016/s0166-8641(02)00035-4
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发表时间:
2002
影响因子:
0.6
通讯作者:
Efstratia Kalfagianni
中科院分区:
文献类型:
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作者:
N. Askitas;Efstratia Kalfagianni
A knot K is called n -adjacent to the unknot if it admits a projection that contains n disjoint single crossings such that changing any 0<m⩽n of these crossings, yields a projection of the unknot. Using a result of Gabai [D. Gabai, J. Differential Geom. 26 (1987) 445–503] we characterize knots that are n -adjacent to the unknot as these obtained from the unknot by n “finger moves” determined by a certain kind of trivalent graphs (Brunnian Suzuki n -graphs). Using this characterization we derive vanishing results about abelian invariants as well as Vassiliev invariants of knots that are n -adjacent to the unknot. Finally, we partially settle a conjecture of [Kalfagianni, X.-S. Lin, Preprint, 1999].
DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
Toshiaki;ADACHI;足利 正;足利 正;足利 正;足利 正;足利 正;鳥巣伊知郎
通讯作者:
鳥巣伊知郎