- #1
Mr Davis 97
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Homework Statement
Show that ##\mathbb{Z} [\sqrt{d}] = \{a+b \sqrt{d} \ | \ a,b,d \in \mathbb{Z} \}## is an integral domain
Homework Equations
The Attempt at a Solution
Do I have to go through all of the axioms to do this? For example, do I have to show that it is an abelian group under addition, that multiplication is associative, and that the distributive property holds, on top of showing that multiplication is commutative and that there is a multiplicative identity and that there are no zero divisors?
This would seem like a lot of unnecessary, but easy, work, so I was wondering if there is a faster way.