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group[NormalClosure] - Find the normal closure of a subgroup of a permutation group
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Calling Sequence
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NormalClosure(sg, pg)
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Parameters
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pg
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group in which the normal closure is to be found
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sg
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subgroup of pg
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Description
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This function finds the smallest normal subgroup of the permutation group pg containing sg. To speed up the computation, it is required that sg be a subgroup of pg. The result is returned as an unevaluated permgroup call.
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The command with(group,NormalClosure) allows the use of the abbreviated form of this command.
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