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Answer by Kimyeong Lee for Dual versions of "folding" symmetric ADE Dynkin...
The dual folding of the Lie algebra has recently appeared in our work arXiv:2103.06044 on twisted 6d (2,0) superconformal quantum field theories on circle. The 6d (2,0) theories of A, D, E type are not...
View ArticleAnswer by Sam Hopkins for Dual versions of "folding" symmetric ADE Dynkin...
Let me explain how both kinds of foldings of Dynkin diagrams (i.e., $A_{2n-1} \to B_n$ and $A_{2n-1} \to C_n$) arise in the context of Lie algebras and characters of their representations.First of all,...
View ArticleDual versions of "folding" symmetric ADE Dynkin diagrams?
Start with the Dynkin diagram of an irreducible root system, typically associated with a simpleLie algebra over $\mathbb{C}$ or a simple algebraic group. Most of the simply-laced ADEdiagrams admit...
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