Sup3rgnu
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 Jun 10 comment Multiplication in the field $F = \mathbb{Z}_2[x]/f(x)$ About your note, you're right my answer in (1) should be $(x^5+x^4+x^3+x^2+1)$ since it's mod 2. Jun 10 comment Multiplication in the field $F = \mathbb{Z}_2[x]/f(x)$ Yeah I think I'm tired don't know what I was thinking.. That was what I got, just didn't see it. Thanks for the help! Jun 10 awarded Supporter Jun 10 comment Multiplication in the field $F = \mathbb{Z}_2[x]/f(x)$ Thanks for the explanation, I think I understand it better now. $(x+1)(x^5 + x^4 + x^3 + x^2 + x) + 1$ was what I got but I wasn't sure that $(x^5 + x^4 + x^3 + x^2 + x)$ was the inverse, I see it now. Jun 10 accepted Multiplication in the field $F = \mathbb{Z}_2[x]/f(x)$ Jun 10 asked Multiplication in the field $F = \mathbb{Z}_2[x]/f(x)$ Jun 10 comment Quick way to check if a polynomial of degree $> 3$ is irreducible? @ZachiEvenor yes Jun 10 comment Quick way to check if a polynomial of degree $> 3$ is irreducible? Thanks for the explanation! Jun 10 awarded Student Jun 10 accepted Quick way to check if a polynomial of degree $> 3$ is irreducible? Jun 10 asked Quick way to check if a polynomial of degree $> 3$ is irreducible? May 21 awarded Editor May 21 revised Prove that the order of an element in the group N is the lcm(order of the element in N's factors p and q) added 7 characters in body May 21 comment Prove that the order of an element in the group N is the lcm(order of the element in N's factors p and q) Ops, I guess I was tired when I wrote it. Of course they divide N and are relative prime to each other. May 21 awarded Scholar May 21 accepted Prove that the order of an element in the group N is the lcm(order of the element in N's factors p and q) May 20 asked Prove that the order of an element in the group N is the lcm(order of the element in N's factors p and q)