The Subconstituent Algebra of an Association Scheme (Part III)

The Subconstituent Algebra of an Association Scheme (Part III)
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DOI:
10.1023/a:1022415825656
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发表时间:
1993
影响因子:
0.8
通讯作者:
Paul M. Terwilliger
Paul M. Terwilliger
中科院分区:
数学3区
文献类型:
--
作者:
Paul M. Terwilliger

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这是上一期文章的续篇。在这一部分中,我们重点研究了P-和Q-多项式结合方案。我们提供了这些对象的一些组合特征,并展示了已知的例子,直径至少为6。对于每一个例子,我们给出了子成分代数的不可约模。最后,我们以一些假设和未解决的问题作为结束。
This is the continuation of an article from the previous issue. In this part, we focus on the thinP- andQ-polynomial association schemes. We provide some combinatorial characterizations of these objects and exhibit the known examples with diameter at least 6. For each example, we give the irreducible modules for the subconstituent algebra. We close with some conjectures and open problems.