Find the subgroup of d4 and the normal and non normal subgroups of d3 and d4...

Find the subgroup of d4 and the normal and non normal subgroups of d3 and d4 using u and v, u being the flips and v being the rotations.

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Colby Messinger answered 1 year ago

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At least how many normal subgroups of a group must have?

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