Math 8203
Fall 1997

Hint for Exercise 6

Suppose that I(X) is not prime. Then there exist f and g in K[x1,..., xn] such that f \not\in.gifI(X), g \not\in.gif I(X), but fg \in.gif I(X). Consider the zerosets V(f) and V(g), and their union. ¿Which of those sets contain X?

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