Abstract
Recently, N. Epstein and J. Shapiro introduced and studied the perinormal domains: those domains A whose going down overrings are flat A-modules. We show that every Prüfer v-multiplication domain is perinormal and has no proper lying over overrings. We also show that a treed perinormal domain is a Prüfer domain. We give two pull-back constructions that produce perinormal/non-perinormal domains.
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