Abstract
The authors of this paper induced five principles of geographical symmetry based on the space distributions of cities and towns in China. There is a symmetry distribution of cities and towns. The symmetry characteristics are the following: (i) the average coordination number of the cities (including large cities, medium cities and county towns) is 6 (i.g. rotation symmetry); (ii) the distribution of large and medium cities are shown to be the latticework in which two directions are parallel to two main tectonic ones in China, respectively; (iii) the distribution of county towns of a province is also shown to be the latticework in which two directions are parallel to two tectonic ones in this province (i. g. two-dimensional translation) and (iv) the concentric circle distribution of cities (CCDC) is centered round a large city (i. g. rotation symmetry).
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Ye, D., Xu, W., He, W. et al. Symmetry distribution of cities in China. Sci. China Ser. D-Earth Sci. 44, 716–725 (2001). https://doi.org/10.1007/BF02907201
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DOI: https://doi.org/10.1007/BF02907201