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we know that every maximal ideal in $C(X)$ is in this form:

$$M^p=\left\{\,f \in C^*(x):\ p\in cl_{\beta X} Z\left(f\right)\,\right\}$$

and every maximal ideal in $C^*(X)$ is

$$M^{*p}=\left\{\,f\in C^*(X):\ f^{\beta}\left(p\right)=0\,\right\}$$

and it is not necessary that

$$ M^p \cap C^*(X) = M^{*p}$$

My question is:

If are prime ideals of $C(X)$ contained in $M^p$, in a one to one corresponding to that of $C^*(X)$ contained in $M^{*p}$ for $p\in \beta X$ ?

$M^p$ and $M^{*p}$ are maximal ideals respectively in $C(X)$ and $C^*(X)$ correspond to $p$. $\beta X$ is Ston-cech compactification of the space $X$ for terminology and notions you can refer to here.

Edite

you can find $\beta X$ at the beginning of Ch.6 and if you want more you should continue. also in Ch.7 section 7.11, it deal whit corresponding between maximal ideals specially.

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    $\begingroup$ If you want people to help you out by doing some work to solve your problem, you're going to have to explain your notation better. I clicked your link but I'm not going to hunt through an entire book to find definitions of notation that you could easily supply in your question. $\endgroup$
    – Nik Weaver
    Aug 17, 2015 at 14:24
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    $\begingroup$ Why do you use 'continued-fractions' tag? $\endgroup$ Aug 18, 2015 at 10:13
  • $\begingroup$ sorry dears.l am grateful to you for your considerations. $\endgroup$
    – v.Begheri
    Aug 22, 2015 at 14:52
  • $\begingroup$ But I think, this is better to deal whit my question in a more specialized page. $\endgroup$
    – v.Begheri
    Aug 22, 2015 at 15:04
  • $\begingroup$ Is there such page for C(X) here? $\endgroup$
    – v.Begheri
    Aug 22, 2015 at 15:18

2 Answers 2

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In general, the prime ideals of $C(X)$ and $C^*(X)$ is not in a one to one corresponding. In fact, The prime ideals of $C(X)$ contained in $M^p$ is in one to one corresponding with that of $C^*(X)$ contained in $M^{*p}$ if and only if $p\in \upsilon X$, where $\upsilon X$ is the Hewitt-Nachbin space (real compactification of X). For more information one can see here Chapter 8 specially p. 119, Problem 7. J and Problem 7. K.

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Yes - the correspondence $M^p \mapsto M^{*p}$ (and vice versa) is exactly what you are looking for.

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  • $\begingroup$ Thanks dear.No I don't.I 'm looking for the correspondence $P\rightarrow P\cap C^*(X)$. $\endgroup$
    – v.Begheri
    Aug 22, 2015 at 15:07

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