Bicône nilpotent d'une algèbre de Lie réductive
英文摘要：
I prefer taking off this paper for the moment because of a mistake in the lemma 2.1 of the secund version. Precisely, in the proof of this lemma, it is not clear that the morphism $r\_j$ is flat, that I claim it.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
