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For questions involving prime ideals in commutative or noncommutative rings.
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A characterization for the ideals of $A+XB[X]$ and $A+XB[[X]]$
Let $A \subseteq B$ be an extension of commutative rings with identity. Then $A+XB[X]$ and $A+XB[[X]]$ are the polynomial and power series rings over $B$ whose constant terms are in $A$. Is there any …