Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRogers Semilattices with Least and Greatest Elements in the Ershov Hierarchy.AuthorsBadaev, S. A.; Goncharov, S. S.SubjectsSEMILATTICES; MATHEMATICAL logic; COMPUTABLE functions; RECURSIVE functions; NUMBER theoryPublicationAlgebra & Logic, 2022, Vol 61, Issue 3, p225ISSN0002-5232Publication typeArticleDOI10.1007/s10469-022-09690-y