Reducible M-curves for Le-networks in the totally-nonnegative Grassmannian and KP-II multiline solitons
Reducible M-curves for Le-networks in the totally-nonnegative Grassmannian and KP-II multiline solitons
复制标题
全非负格拉斯曼和 KP-II 多线孤子中 Le 网络的可约 M 曲线
DOI:
10.1007/s00029-019-0488-5
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发表时间:
2018
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影响因子:
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通讯作者:
P. Grinevich
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作者:
S. Abenda;P. Grinevich
We associate real and regular algebraic–geometric data to each multi-line soliton solution of Kadomtsev–Petviashvili II (KP) equation. These solutions are known to be parametrized by points of the totally non-negative part of real Grassmannians. In [3] we were able to construct real algebraic–geometric data for soliton data in the main cellonly. Here we do not just extend that construction to all points in, but we also considerably simplify it, since both the reducible rational-curveand the real regular KP divisor onare directly related to the parametrization of positroid cells invia the Le-networks introduced in [63]. In particular, the direct relation of our construction to the Le-networks guarantees that the genus of the underlying smooth-curve is minimal and it coincides with the dimension of the positroid cell into which the soliton data belong to. Finally, we apply our construction to soliton data inand we compare it with that in [3].
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