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Some Designs And Codes Invariant Under The Groupss_9 And A_8

机译:Groups_9和A_8下的某些设计和代码不变

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摘要

We examine some designs and binary codes constructed from the primitive permutation representations of the groups PSL_2(8) and PSL_2(9). For PSL_2(8) of degree 36, we construct a design and its code with the automorphism groups PSL_2 (8) and S__9, respectively. For PSL_2(8) of degree 36 and PSL_2(9) of degree 15, we construct some designs and its codes invariant under the groups S_9 and A_8, respectively. The weight distribution and the dual of these codes are determined. By considering the action of automorphism groups on some of these codes, we obtain the structure of the stabilizer for every codeword and construct some designs such that S_9 or A_8 act primitively on them.
机译:我们研究了从组PSL_2(8)和PSL_2(9)的原始置换表示构造的一些设计和二进制代码。对于36度的PSL_2(8),我们分别使用自同构组PSL_2(8)和S__9构造设计及其代码。对于度为36的PSL_2(8)和度为15的PSL_2(9),我们分别构造了一些设计及其代码在S_9和A_8组下是不变的。确定这些代码的权重分布和对偶。通过考虑自同构群对其中一些代码的作用,我们获得了每个代码字的稳定器结构,并构建了一些设计,使得S_9或A_8最初作用于它们。

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