Arzhantsev, I.V.; Petravchuk, A.P.
(Український математичний журнал, 2007)
The behavior of closed polynomials, i.e., polynomials f∈k[x₁,…,xn]∖k such that the subalgebra k[f] is integrally closed in k[x₁,…,xn], is studied under extensions of the ground field. Using some properties of closed ...