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Bøger af T. G. Room

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  • - An Introduction to the Study of Projective Planes
    af T. G. Room
    450,95 kr.

    This tract provides an introduction to four finite geometrical systems and to the theory of projective planes. Of the four geometries, one is based on a nine-element field and the other three can be constructed from the nine-element 'miniquaternion algebra', a simple system which has many though not all the properties of a field.

  • - Natural, Synthetic and Algebraic
    af T. G. Room
    511,95 kr.

    The central theme of the book is the development of the idea of congruence, that relation between geometric figures which is basic to ordinary Euclidean geometry.