2024-03-29T00:16:09Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/560202019-03-18T10:23:55Zhdl_2115_55871hdl_2115_45005hdl_2115_116PARTIALLY ORDERED ABELIAN SEMIGROUPS. IV ON THE EXTENTION OF THE CERTAIN NORMAL PARTIAL ORDER DEFINED ON ABELIAN SEMIGROUPSNakada, Osamu410北海道大学Departmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/56020https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/56020/1/JFSHIU_15_N3-4_233-237.pdf2189-3187Journal of the Faculty of Science Hokkaido University. Ser. 1 Mathematics153-42332371961engpublisher