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首页> 外文期刊>Annales scientifiques de l'Ecole normale superieure >Homology stability for orthogonal groups over algebraically closed fields
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Homology stability for orthogonal groups over algebraically closed fields

机译:代数封闭域上正交群的同伦稳定性

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摘要

We give the best ranges of stability, for homology of orthogonal groups and special orthogonal groups, over an algebraically closed field, of characteristic different from 2. This answers affirmatively a conjecture asserted in a previous paper. We find distinct ranges of stability for orthogonal and special orthogonal groups, and Milnor K-theory appears as an obstruction to stability for special orthogonal groups. The main results are formulated, more generally, for infinite Pythagorean fields. (c) 2007 Elsevier Masson SAS
机译:对于正交群和特殊正交群的同源性,我们在代数闭合域上给出了不同于2的特征,从而给出了最佳的稳定性范围。这肯定回答了先前论文中提出的一个猜想。我们发现正交和特殊正交基团具有不同的稳定性范围,而Milnor K-理论似乎阻碍了特殊正交基团的稳定性。更广泛地说,主要结果是针对无限的毕达哥拉斯区域。 (c)2007年Elsevier Masson SAS

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