Integrable Roots in Split Graded Lie Alg
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Karl-Hermann Neeb
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Article
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2000
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Elsevier Science
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English
⚖ 314 KB
A Lie algebra is said to be split graded if it is graded by a torsion free abelian group Q in such a way that the subalgebra 0 is abelian and the operators ad 0 are diagonalized by the grading. The elements of Q \ 0 with α = 0 are called roots and a root α is said to be integrable if there are root