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-   -   the zero set of an ideal (http://mymathforum.com/abstract-algebra/41084-zero-set-ideal.html)

rayman January 28th, 2014 06:24 AM

the zero set of an ideal
 
Given
Find the zero set


By definition :



So I show that we must have

and from this



hence  right?

Deveno January 28th, 2014 11:35 PM

Re: the zero set of an ideal
 
It seems to me your zero-set is too small. For example, what about (0,0,c), (0,b,0) or (a,0,0)?

Surely every element of J annihilates all of those....


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