Oriented angles in affine space
Abstract
The concept of a smooth oriented angle in an arbitrary affine space is introduced. This concept is based on a kinematics concept of a run. Also, a concept of an oriented angle in such a space is considered. Next, it is shown that the adequacy of these concepts holds if and only if the affine space in question is of dimension 2 or 1.
References
[B–B] A. Białynicki-Birula, Linear Algebra with Geometry (in Polish), Biblioteka Matematyczna [Mathematics Library] 48, PWN, Warszawa, 1974.
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[K] J. L. Kelley, General Topology, D. Van Nostrand Company, Inc., Toronto – New York – London, 1955.
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