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Dk Singularities


Dk: x1(x1k-2 + x22) +x32 + ... + xn2 , k >= 4

Real Pictures: n=3; x1(x1k-2-x22)+x32=0
D4 D5 D6 D7
Dynkin Diagram:
Ak, Ek

Paris 7-2-01 http://www.singular.uni-kl.de