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Studies in Rings generalised Unique Factorisation Rings

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-109-<br />

Jk < Qo Consequently J ~ Q, s<strong>in</strong>ce Q is prime. Thus<br />

I ~ Q, which contradicts the selection of Q. Therefore<br />

P satisfies the right second layer condition.<br />

Corollary 4.36.<br />

Let P be a height 1 prime ideal of a GUFR such<br />

that {p} is right stable. Then P is classically right<br />

localisableo<br />

Proof:<br />

This is an immediate c ons equen c e of theorem 4.14<br />

and theorem 4035.<br />

A semiprime ideal S of a Noetherian r<strong>in</strong>g is said<br />

to be classically right localisable if the f<strong>in</strong>ite set<br />

of prime ideals associated with S<br />

is classically right<br />

localisable. Thus we get another consequence of theorenl<br />

4.35 and theorem 4.23.<br />

Corollary 4.37.<br />

Let S be a semiprime ideal <strong>in</strong> a GUFR and assume<br />

that the associated prime ideals of S are height 1<br />

prime ideals.<br />

Suppose also that the collection of<br />

associated primes is right stable.<br />

Then S is classically<br />

r i.qh t Lo c a.l i s a bl e ,

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