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arXiv 1111.1338math.APmath-phmath.DGmath.MP
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二阶Darboux Wronskian公式完备性的证明

Proof of the Completeness of Darboux Wronskian Formulae for Order Two

Ekaterina Shemyakova

摘要:

达布-朗斯基公式允许构造达布变换,但拉普拉斯变换,即一阶达布变换,不能用这种方式表示。这是一个长期存在的问题,什么是其他例外。在我们以前的工作中,我们证明了在全阶为1的变换中没有其他例外。在这里,我们证明了,对于变换的总阶2有没有例外。我们还得到了一个简单的显式不变描述的所有可能的达布变换的总阶2。

英文摘要:

Darboux Wronskian formulas allow to construct Darboux transformations, but Laplace transformations, which are Darboux transformations of order one cannot be represented this way. It has been a long standing problem on what are other exceptions. In our previous work we proved that among transformations of total order one there are no other exceptions. Here we prove that for transformations of total order two there are no exceptions at all. We also obtain a simple explicit invariant description of all possible Darboux Transformations of total order two.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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