Improve subgroup conjugacy of permutation groups #5514
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for permutation groups -- improve conjugcy test stage.
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Added ClusterConjugacyPermgroups. Use if degree larger or for SubgroupsOrbits. Remove commented out debugging and dead code
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Probably not in a meaningful way. One could use similar ideas, but in Sn should immediately write down certain elements or subgroups from their combinatorial properties. |
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Subgroup conjugacy in permutation groups uses orbit structures, factor groups, and brute force test if small index before attempting backtrack.
Use this also in subgroup lattice computations, in particular in LowLayerSubgroups.
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Subgroup conjugacy of permutation groups has been improved