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首页> 外文期刊>Journal of algebra and its applications >THE BAD BEHAVIOR OF REPRESENTATION GROUPS
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THE BAD BEHAVIOR OF REPRESENTATION GROUPS

机译:代表组的不良行为

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摘要

Let (H, A) be a primitive central extension of a finite group G. We show that A is not characteristic in H in general, and further demonstrate in a series of examples that results, which hold about inner automorphisms of H, do not extend to the full automorphism group of H. We also give some new results about isoclinism and representation groups of G in the case that H is capable. Finally we give an example of two non-isomorphic groups of the same order, which not only have a representation group in common, but also have identical projective character tables.
机译:让(h,a)是有限组G的原始中央扩展。我们展示了H的一般性在H中的特征,并进一步在一系列结果中展示了结果,该实施例持有H的内部自同一性,不 延伸到H的完整万态体组。我们还提供了一些关于H所能力的ISoclintlism和代表组的新结果。 最后,我们给出了相同顺序的两个非同胞组的示例,这不仅具有共同的表示组,而且具有相同的投射字符表。

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