• Definition of improper groups by means of axioms : a dissertation 

    Hurwitz, Wallie Abraham, 1886-1958 (University of Missouri, 1906)
    Essentially, a group is an associative field, in which the inverse combinations are uniquely possible. This is a concise statement of the classical definition of a group. The conditions which it connotes will be used here ...
  • Foundations of geometry 

    Gladney, Andrew Gaston (University of Missouri, 1901)
    Geometry has been called the science of in-direct measurement, and as such is founded on certain definitions, postulates, and some assumptions or axioms which are said to be self-evident. It is a physical science idealized. ...