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 Jul2 awarded Curious May26 comment Ideals of quotient algebras. thx, sort of starting to make sense:) May26 accepted Ideals of quotient algebras. May26 comment Ideals of quotient algebras. could you explain in more detail please :) May26 comment Ideals of quotient algebras. I know that I can do this to prove the fact that I've stated. by using kernal and image of the homomorphism. That's not what I was asking though. May26 revised Ideals of quotient algebras. added 12 characters in body May26 asked Ideals of quotient algebras. May23 comment Solving complex linear congruences But to answer the question. I don't get why you want to multiply 3+3i by 1-i and why knowing that 5 =-1 and having 5 as a denominator helps us. EDIT: trying to figure out what's 10 mod 3+3i. Lol I'm going full potatoe on this one. May23 awarded Commentator May23 comment Solving complex linear congruences Yes I get the rationalizing part. I think I rushed a little with asking this question. To be honest I don't even quite get how to find a modulus of a number when working with complex numbers. Like how do you find 5 mod 3+3i? I'm going to play around with these, and I think that should make things a little clearer for me :) May23 comment Solving complex linear congruences Makes no sense to me. Could you explain the steps? May23 comment Solving complex linear congruences yeah i guess so May23 asked Solving complex linear congruences May22 accepted proving that symplectic lie algebra is a subalgebra of GL May22 asked proving that symplectic lie algebra is a subalgebra of GL May20 accepted If a number is a square modulo $n$, then it is also a square modulo any of $n$'s factors May20 awarded Supporter May20 comment If a number is a square modulo $n$, then it is also a square modulo any of $n$'s factors Thanks. This is so simple, can't believe I was struggling with this. May20 asked If a number is a square modulo $n$, then it is also a square modulo any of $n$'s factors Dec13 accepted Prove that irrational number $a= \sqrt K$ is a periodic continued fraction