An affine Weyl group approach to the eight-parameter discrete Painlevé equation
An affine Weyl group approach to the eight-parameter discrete Painlevé equation
复制标题
八参数离散 Painlevé 方程的仿射 Weyl 群方法
DOI:
10.1088/0305-4470/34/48/316
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
B. Grammaticos
中科院分区:
文献类型:
--
作者:
Y. Ohta;A. Ramani;B. Grammaticos
We present a geometrical construction of the eight-parameter discrete Painlevé equations. Our starting point is the E(1)8 affine Weyl group. We assume that the multi-dimensional τ-function lives on the vertices of the weight lattice of this group. We derive the bilinear equations related to the discrete Painlevé equation in the form of nonautonomous Hirota-Miwa equations and the elementary Miura transformations. The compatibility condition of the various Miura's that can be written leads to three types of equations: difference, multiplicative (q) and another type where the parameters and the independent variable enter through the arguments of elliptic functions. We write explicitly the discrete equations in the first two cases and produce their degeneration through coalescence of parameters.
影响因子:
2.4
作者:
H. Sakai
通讯作者:
H. Sakai
DOI:
--
发表时间:
2005
期刊:
Phys. A347
影响因子:
--
作者:
A.RAMANI;R.Willox;B.GRAMMATICOS;A.S.CARSTEA;Junkichi SATSUMA
通讯作者:
Junkichi SATSUMA