## Question

###### Let G = {( :) ez} Notice that G is a group under matrix multiplication (you do not have to prove this) Prove that the map $ : G + Z defined via a isan isomorphism (Z is under addition):

Let G = {( :) ez} Notice that G is a group under matrix multiplication (you do not have to prove this) Prove that the map $ : G + Z defined via a isan isomorphism (Z is under addition):

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