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PhysicsHelp12
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Construct an isomorphism
A4 (AND) D4 ---> (Z/2,+)X(Z/2,+)
where D4's the symmetries of the square
so I found D4(And)A4={(13)(24),Id,(12)(34),(14)(23)}
A4 (AND) D4 ---> (Z/2,+)X(Z/2,+)
where D4's the symmetries of the square
so I found D4(And)A4={(13)(24),Id,(12)(34),(14)(23)}