@article {IOPORT.01225790,
    author       = {Goncharov, S.S. and Badaev, S.A.},
    title        = {Classes with Rogers one-element semilattice.},
    year         = {1998},
    journal      = {Algebra i Logika},
    volume       = {37},
    number       = {1},
    issn         = {0373-9252},
    pages        = {36-62 (1998); translation in Algebra Logic 37, No. 1, 21-34},
    publisher    = {Sibirskii Fond Algebry i Logiki, Institut Diskretnoi Matematiki i Informatiki, Novosibirsk},
    abstract     = {The main results of the article are as follows: an algorithmic description is given of classes of general recursive functions having a Rogers one-element semilattice; it is also shown that there exists a class of recursively enumerable sets which is not a topological $T_1$-space under the Baire topology, but its Rogers semilattice is a singleton.},
    reviewer     = {M.F.Murzina (Novosibirsk)},
    identifier   = {01225790},
}