Let R = {a + b2 | a, b Z} and let R' consist of all
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Let R = {a + b√2 | a, b ∈ Z} and let R' consist of all 2 x 2 matrices of the form
Show that R is a subring of !R. and that R' is a subring of M2(Z). Then show that ∅ : R → R', where ∅(a + b√2) =
ls an isomorphism.
Transcribed Image Text:
[a b] for a, b € Z.
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Because a b2c d2 a cb d 2 and 0 0 02 and a b2 ab2 we see tha...View the full answer
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