Abstract
A new and conceptually simpler proof is given of the theorem of A. D. Aleksandrov and G. C. Shephard, that ad-polytope (d≧3), all of whose facets are centrally symmetric, is itself centrally symmetric.
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McMullen, P. Polytopes with centrally symmetric facets. Israel J. Math. 23, 337–338 (1976). https://doi.org/10.1007/BF02761811
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DOI: https://doi.org/10.1007/BF02761811