本文给出了一个反例说明超连续domainL在Scott连续闭包算子c下的像c(L)不一定是超连续domain,证明了若超连续domainL上的Scott连续投射P有上伴随或有下伴随,则p(L)是超连续domain;若超代数domainL上的Scott连续闭包算子c有上伴随或有下伴随,则c(L)是超代数domain.
In this paper, we give a counterexample to show that for an upper-continuous closure operator c on the hyperalgebraic domain L, c(L) is not a hypercontinuous domain. It is proved that if p is a Scott-continuous projection on a hypercontinuous domain L and p is a lower (upper) adjoint, then p(L) is a hypercontinuous domain. We also show that if c is a Scott-continuous closure operator on the hyperalgebraic domain L and c is a lower (upper) adjoint, then c(L) is a hyperalgebraic domain.