Closed polynomials and saturated subalgebras of polynomial algebras

• Veröffentlicht in: Український математичний журнал
• Datum: 2007
• Hauptverfasser: Arzhantsev, I.V., Petravchuk, A.P.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Інститут математики НАН України 2007
• Schlagworte: Статті
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/172514
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Closed polynomials and saturated subalgebras of polynomial algebras / I.V. Arzhantsev, A.P. 
 Petravchuk // Український математичний журнал. — 2007. — Т. 59, № 12. — С. 1587–1593. — Бібліогр.: 15 назв. — англ.

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 polynomials, we prove that, after shifting by constants, every polynomial f∈k[x₁,…,x...