Prime ideals and quotient rings
Let
- Show that if
is a prime ideal of , then is a prime ideal of . - Show that the assignment
is injective on the set of prime ideals of .
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Let $R$ be a commutative ring with unity, let $I\subseteq R$ be an ideal, and let $\pi:R\to R/I$ be the natural projection homomorphism.
\begin{enumerate}[label=\alph*)]
\item Show that if $\wp$ is a prime ideal of $R/I$, then $\pi^{-1}(\wp)$ is a prime ideal of $R$.
\item Show that the assignment $\wp\mapsto\pi^{-1}(\wp)$ is injective on the set of prime ideals of $R/I$.
\end{enumerate}