Solution
= Solution
An element $x\in B$ is <integral element>[integral over $A$] when it satisfies a monic polynomial with coefficients in $A$. Equivalently, $A[x]$ is a finite $A$-module.
= Solution
An element $x\in B$ is <integral element>[integral over $A$] when it satisfies a monic polynomial with coefficients in $A$. Equivalently, $A[x]$ is a finite $A$-module.