@article{oai:kitami-it.repo.nii.ac.jp:00006304, author = {Kiro, ISOBE and Teiko, HIGASHIYAMA and Kiro, ISOBE and Teiko, HIGASHIYAMA}, issue = {2}, journal = {北見工業大学研究報告}, month = {Jun}, note = {application/pdf, Let E be a partially ordered linear space in a most general sense. We define the set P in E such that P={x: x<y implies y≧0}. In section 1, we shall consider about some necessary conditions which yield to that P=E^+. In section 2, we shall investigate about some properties of P. And assuming that P satisfies conditions of positive cone of partially ordered linear space, we shall make properties of ordering which is introduced by P clear. Finally we shall get necessary and suffcient condition of that P=E^+.}, pages = {509--511}, title = {A Certain Expansion of Positive Cone of Partially ordered Linear Spaces}, volume = {3}, year = {1972} }