Let D be an integral domain which is not a field. If either D is Noetherian or D is a Prüfer domain, then Int D is a treed domain if and only if it is a going-down domain. Suppose henceforth that D;m is Noetherian local and one-dimensional, with D=m finite. Then Int D is a going-down domain if and only if D is unibranched (inside its integral closure); and Int D is locally divided if and only if D is analytically irreducible. Thus, if D is unibranched but not analytically irreducible, then Int D provides an example of a two-dimensional going-down domain which is not locally divided. Also, Int D is a locally pseudo-valuation domain if and only if D is itself a pseudo-valuation domain. Thus, Int D also provides an example of a two-dimensional locally divided domain which is not an LPVD.
CAHEN P., J., CHABERT J., L., DOBBS D., E., Tartarone, F. (2000). On locally divided domains of the form ${rm Int}(D)$. ARCHIV DER MATHEMATIK, 74, 183-191 [10.1007/s000130050429].
On locally divided domains of the form ${rm Int}(D)$
TARTARONE, FRANCESCA
2000-01-01
Abstract
Let D be an integral domain which is not a field. If either D is Noetherian or D is a Prüfer domain, then Int D is a treed domain if and only if it is a going-down domain. Suppose henceforth that D;m is Noetherian local and one-dimensional, with D=m finite. Then Int D is a going-down domain if and only if D is unibranched (inside its integral closure); and Int D is locally divided if and only if D is analytically irreducible. Thus, if D is unibranched but not analytically irreducible, then Int D provides an example of a two-dimensional going-down domain which is not locally divided. Also, Int D is a locally pseudo-valuation domain if and only if D is itself a pseudo-valuation domain. Thus, Int D also provides an example of a two-dimensional locally divided domain which is not an LPVD.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.