On region crossing change and incidence matrix
On region crossing change and incidence matrix
复制标题
关于区域交叉变化和关联矩阵
DOI:
10.1007/s11425-012-4403-1
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发表时间:
2011-01
期刊:
影响因子:
--
通讯作者:
Hongzhu Gao
中科院分区:
文献类型:
--
作者:
Zhiyun Cheng;Hongzhu Gao
In a recent work of Ayaka Shimizu, she studied an operation named region crossing change on link diagrams, which was proposed by Kishimoto, and showed that a region crossing change is an unknotting operation for knot diagrams. In this paper, we prove that the region crossing change on a 2-component link diagram is an unknotting operation if and only if the linking number of the diagram is even. Besides, we define an incidence matrix of a link diagram via its signed planar graph and its dual graph. By studying the relation between region crossing change and incidence matrix, we prove that a signed planar graph represents ann-component link diagram if and only if the rank of the associated incidence matrix equalsc−n+ 1, wherecdenotes the size of the graph.
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影响因子:
0.7
作者:
Ayaka Shimizu
通讯作者:
Ayaka Shimizu
DOI:
10.1007/978-1-4419-8698-6
发表时间:
2003-07
期刊:
--
影响因子:
--
作者:
Junming Xu
通讯作者:
Junming Xu
DOI:
10.1090/chel/346
发表时间:
2003-12
期刊:
--
影响因子:
--
作者:
D. Rolfsen
通讯作者:
D. Rolfsen
影响因子:
64.8
作者:
A. Mackay
通讯作者:
A. Mackay
DOI:
10.1097/00007611-198703000-00044
发表时间:
1987
期刊:
--
影响因子:
--
作者:
J. D. Tardós;J. D. Tardós;José Neira;Javier Mínguez;Diego Gutiérrez
通讯作者:
J. D. Tardós;J. D. Tardós;José Neira;Javier Mínguez;Diego Gutiérrez