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arXiv 1502.03891nlin.SImath-phmath.MP
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约化Ostrovsky方程的可积半离散

Integrable semi-discretizations of the reduced Ostrovsky equation

Bao-Feng Feng, Ken-ichi Maruno, Yasuhiro Ohta

摘要:

基于我们以前对约化Ostrovsky方程的工作(J.Phys.A45355203),我们构造了它的可积半离散化.由于约化Ostrovsky方程有两种不同的表示形式,一种是它的原始形式,另一种是Degasperis-Procesi方程的微分形式或短波极限,因此构造了约化Ostrovsky方程的两个半离散类似物,它们具有相同的N圈孤子解.这两个版本的半离散化之间的关系也澄清。

英文摘要:

Based on our previous work to the reduced Ostrovsky equation (J. Phys. A 45 355203), we construct its integrable semi-discretizations. Since the reduced Ostrovsky equation admits two alternative representations, one is its original form, the other is the differentiation form, or the short wave limit of the Degasperis-Procesi equation, two semi- discrete analogues of the reduced Ostrovsky equation are constructed possessing the same N-loop soliton solution. The relationship between these two versions of semi-discretizations is also clarified.

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