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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeJun 13th 2014

started something at ADE classification, but am out of steam (and time) now.

• CommentRowNumber2.
• CommentAuthorzskoda
• CommentTimeJun 15th 2014
• (edited Jun 15th 2014)

simply laced Dynkin diagrams of types A, D and E (but excluding type B and C)

Simply laced excludes B and C by definition right ? This is in a confusing contradiction with the usage of the word “but” in brackets…

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeMar 22nd 2017
• (edited Mar 22nd 2017)

I have added a section here discussing how one may see, via $N = 2$ super Yang-Mills theory, why and how the finite subgroups of $SU(2)$ corresponding to some Dynking diagram are related to the compact simpl Lie groups corresponding to the same Dynkin diagram.

• CommentRowNumber4.
• CommentAuthorUrs
• CommentTimeSep 30th 2018