An Algorithm to Find Ribbon Disks for Alternating Knots
An Algorithm to Find Ribbon Disks for Alternating Knots
复制标题
寻找交替结带盘的算法
DOI:
10.1080/10586458.2022.2158968
复制
发表时间:
2023
影响因子:
0.5
通讯作者:
Owens B
中科院分区:
文献类型:
--
作者:
Owens B
We describe an algorithm to find ribbon disks for alternating knots, and the results of a computer implementation of this algorithm. The algorithm is underlain by a slice link obstruction coming from Donaldson’s diagonalization theorem. It successfully finds ribbon disks for slice two-bridge knots and for the connected sum of any alternating knot with its reverse mirror, as well as for 662,903 prime alternating knots of 21 or fewer crossings. We also identify some examples of ribbon alternating knots for which the algorithm fails to find ribbon disks, though a related search identifies all such examples known. Combining these searches with known obstructions, we resolve the sliceness of all but 3276 of the over 1.2 billion prime alternating knots with 21 or fewer crossings.
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DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
J. Rasmussen
通讯作者:
J. Rasmussen
影响因子:
2
作者:
P. Lisca
通讯作者:
P. Lisca
影响因子:
0.8
作者:
Lebrecht Goeritz
通讯作者:
Lebrecht Goeritz
影响因子:
0.7
作者:
P. Lisca
通讯作者:
P. Lisca
影响因子:
0.7
作者:
Donald A
通讯作者:
Donald A