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- #1
bw0young0math
New member
- Jun 14, 2013
- 27
Hello. Today I study domains but I have some problems. Please help me.
I learned Z[root(-3)] is not UFD.
Then Z[root(-3)] is a example about gcd-domain( there exist some elts a,b in domain D such that it does not exist gcd(a,b).)
Let a=2, b-1+root(-3) .
a and b are not associates and they just have common divisor 1 and -1.
So gcd(a,b) does not exist.
Hum..... I don't know why associate, 1/-1 have some relations with not existing gcd. Please...............................
I learned Z[root(-3)] is not UFD.
Then Z[root(-3)] is a example about gcd-domain( there exist some elts a,b in domain D such that it does not exist gcd(a,b).)
Let a=2, b-1+root(-3) .
a and b are not associates and they just have common divisor 1 and -1.
So gcd(a,b) does not exist.
Hum..... I don't know why associate, 1/-1 have some relations with not existing gcd. Please...............................