THE RIGHT ANGLE TO LOOK AT ORTHOGONAL SETS
THE RIGHT ANGLE TO LOOK AT ORTHOGONAL SETS
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查看正交集的正确角度
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
F. Wagner
中科院分区:
文献类型:
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作者:
F. Wagner
Abstract If X and Y are orthogonal hyperdefinable sets such that X is simple, then any group G interpretable in X ∪ Y has a normal hyperdefinable X-internal subgroup N such that G/N is Y-internal; N is unique up to commensurability. In order to make sense of this statement, local simplicity theory for hyperdefinable sets is developed. Moreover, a version of Schlichting’s Theorem for hyperdefinable families of commensurable subgroups is shown.