Purely inseparable algebraic element
= Purely inseparable algebraic element
An algebraic element $x$ is purely inseparable over $K$ when $x^{p^n}\in K$ for some $n\geq0$.
= Purely inseparable algebraic element
An algebraic element $x$ is purely inseparable over $K$ when $x^{p^n}\in K$ for some $n\geq0$.