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The ubiquity of Coxeter-Dynkin diagrams (an introduction to the A-D-E problem). (English) Zbl 0377.20037


MSC:

20G20 Linear algebraic groups over the reals, the complexes, the quaternions
17B20 Simple, semisimple, reductive (super)algebras
16Gxx Representation theory of associative rings and algebras
51F15 Reflection groups, reflection geometries
20F05 Generators, relations, and presentations of groups
14B05 Singularities in algebraic geometry
57R45 Singularities of differentiable mappings in differential topology
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