Let a e Z2 be a zero of the irreducible polynomial x³ + x +1 over Z2. 1. Show that the Frobenius automorphism ơ2 of Z2(a) permutes the elements of A = {a, a²,a+a²} and B = {1+a,1+a²,1+a+a²}. 2. Verify that the elements of B are the zeros of x³ + x² + 1 in Z2.

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Let a € Z2 be a zero of the irreducible polynomial x³ + x +1 over Z2.
1. Show that the Frobenius automorphism ơ2 of Z2(@) permutes the elements of
A = {a, a², a + a²} and B = {1+ a, 1+ a², 1+ a + a²}.
2. Verify that the elements of B are the zeros of x³ + x² + 1 in Z2.
Transcribed Image Text:Let a € Z2 be a zero of the irreducible polynomial x³ + x +1 over Z2. 1. Show that the Frobenius automorphism ơ2 of Z2(@) permutes the elements of A = {a, a², a + a²} and B = {1+ a, 1+ a², 1+ a + a²}. 2. Verify that the elements of B are the zeros of x³ + x² + 1 in Z2.
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