Triangulations and soliton graphs for totally positive Grassmannian
Triangulations and soliton graphs for totally positive Grassmannian
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完全正格拉斯曼函数的三角剖分和孤子图
DOI:
10.1016/j.aim.2020.107439
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发表时间:
2021
影响因子:
1.7
通讯作者:
Kodama, Yuji
中科院分区:
文献类型:
--
作者:
Karpman, Rachel;Kodama, Yuji
The KP equation is a nonlinear dispersive wave equation which provides an excellent model for resonant interactions of shallow-water waves. It is well known that regular soliton solutions of the KP equation may be constructed from points in the totally nonnegative Grassmannian Gr (N, M)≥ 0. Kodama and Williams studied the asymptotic patterns (tropical limit) of KP solitons, called soliton graphs, and showed that they correspond to Postnikov's Le-diagrams. In this paper, we consider soliton graphs for the KP hierarchy, a family of commuting flows which are compatible with the KP equation. For the positive Grassmannian Gr (2, M)> 0, Kodama and Williams showed that soliton graphs are in bijection with triangulations of the M-gon. We extend this result to Gr (N, M)> 0 when N= 3 and M= 6, 7 and 8. In each case, we show that soliton graphs are in bijection with Postnikov's plabic graphs, which generalize Le-diagrams.
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DOI:
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发表时间:
1990
期刊:
Applied Geometry And Discrete Mathematics
影响因子:
--
作者:
Carl W. Lee
通讯作者:
Carl W. Lee
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Y. Kodama
通讯作者:
Y. Kodama
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Ji
通讯作者:
Ji
影响因子:
3.7
作者:
Y. Kodama;H. Yeh
通讯作者:
H. Yeh
DOI:
--
发表时间:
2006
期刊:
The Student Mathematical Library
影响因子:
--
作者:
Rekha R. Thomas
通讯作者:
Rekha R. Thomas