The problem of classification of \((P\hbox { and }Q)\)-polynomial association schemes, as a finite analogue of E. Cartan’s classification of compact symmetric spaces, was posed in the monograph “Association schemes” by E. Bannai and T. Ito in the early 1980s. In this expository paper, we report on some recent results towards its solution.

中文翻译：

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关于$$（P \ hbox {和} Q）$$（P和Q）-多项式关联方案的分类的最新进展

E. Bannai在专着“ Association schemes”中提出了\（（P \ hbox {和} Q）\）-多项式关联方案的分类问题，它是E. Cartan的紧致对称空间分类的有限模拟。和T. Ito在1980年代初期。在此说明文件中，我们报告了一些近期解决方案。