Displaying similar documents to “Symmetries of woven fabrics”

3-designs from PGL ( 2 , q ) .

Cameron, P.J., Omidi, G.R., Tayfeh-Rezaie, B. (2006)

The Electronic Journal of Combinatorics [electronic only]

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The closure diagram for nilpotent orbits of the split real form of E8

Dragomir Đoković (2003)

Open Mathematics

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Let 𝒪 1 and 𝒪 2 be adjoint nilpotent orbits in a real semisimple Lie algebra. Write 𝒪 1 𝒪 2 if 𝒪 2 is contained in the closure of 𝒪 1 . This defines a partial order on the set of such orbits, known as the closure ordering. We determine this order for the split real form of the simple complex Lie algebra, E 8. The proof is based on the fact that the Kostant-Sekiguchi correspondence preserves the closure ordering. We also present a comprehensive list of simple representatives of these orbits, and...