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arXiv 2007.05707math-phmath.MPnlin.SI
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一个完全非交换的Painlevé II族:拉克斯对和与Fredholm行列式有关的解

A fully noncommutative Painlevé II hierarchy: Lax pair and solutions related to Fredholm determinants

Sofia Tarricone

摘要:

我们考虑与$n - $ th Airy函数的矩阵版本相关联的矩阵卷积算子的Fredholm行列式。利用可积算子的理论,我们将它们与一个完全非交换的Painlevé II层次,定义通过矩阵值版本的Lenard算子。特别是,黎曼-希尔伯特技术用于研究这些可积算子允许找到一个拉克斯对的每个成员的层次。最后,将Lax矩阵的系数用这些矩阵值的Lenard算子表示,并将其解用矩阵Airy卷积算子平方的Fredholm行列式表示.

英文摘要:

We consider Fredholm determinants of matrix convolution operators associated to matrix versions of the $n - $th Airy functions. Using the theory of integrable operators, we relate them to a fully noncommutative Painlevé II hierarchy, defined through a matrix valued version of the Lenard operators. In particular, the Riemann-Hilbert technique used to study these integrable operators allows to find a Lax pair for each member of the hierarchy. Finally, the coefficients of the Lax matrices are explicitely written in terms of these matrix valued Lenard operators and some solution of the hierarchy are written in terms of Fredholm determinants of the square of the matrix Airy convolution operators.

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