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- adv. Alternative spelling of set theoretically.
Sorry, no etymologies found.
In current treatments, it is sometimes added that any other set-theoretically constructed system that is isomorphic to the system of Dedekind cuts or to the system of finite von Neumann ordinals, respectively, would do as well, i.e., be usable for all mathematical purposes as “the real numbers” or “the natural numbers”.
LeÅniewski's antipathy towards set theory was so vehement and his criticisms so intemperate that it led to a break in relations with his set-theoretically minded mathematical colleagues SierpiÅski and Kuratowski; he resigned from the editorial board of Fundamenta mathematicae, with the result that he was no longer able to publish his own work there.