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Jan 20, 2015 at 16:24 comment added Nina Many thanks for your advice. I finally found a way to get around this computation for my specific problem. But I will definitely keep the name of de Graaf in mind.
Jan 19, 2015 at 21:25 comment added Dietrich Burde Yes, he is indeed experienced with it. We discussed an algorithm about finding maximal abelian ideals. I think it can be adapted for the general case.
Jan 19, 2015 at 18:50 comment added Jim Humphreys It might still be helpful to ask him directly by email (I think he is now at the University of Trento in Italy), since he is quite experienced with Lie algebra algorithms.
Jan 19, 2015 at 16:57 comment added Nina @Jim Thank you for your suggestion. I do not have access to this book, but from the "Contents" and the "Index of Algorithms" at the end, I am not sure that it provides a (straight) answer. I have also read other articles of de Graaf and I did not find anything.
Jan 19, 2015 at 16:31 comment added Jim Humphreys Have you looked at W.A. de Graaf's book ams.org/mathscinet-getitem?mr=1743970 (or his papers)?
Jan 19, 2015 at 16:04 review First posts
Jan 19, 2015 at 16:09
Jan 19, 2015 at 16:01 history asked Nina CC BY-SA 3.0