For an arbitrary polygon generate a new one by joining the centres of consecutive edges. Iteration of this procedure leads to a shape which is affine equivalent to a regular polygon. This regularisation effect is usually ascribed to Count Buffon (1707–1788). We discuss a natural analogue of this procedure for 3-dimensional polyhedra, which leads to a new notion of affine -regular polyhedra. The main result is the proof of existence of star-shaped affine $$-regular polyhedra with prescribed combinatorial structure, under partial symmetry and simpliciality assumptions. The proof is based on deep results from spectral graph theory due to Colin de Verdière and Lovász.
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Veronika Schreiber, Alexander P. Veselov, Joseph P. Ward, In search for a perfect shape of polyhedra: Buffon transformation. Enseign. Math. 61 (2015), no. 3/4, pp. 261–284DOI 10.4171/LEM/61-3/4-1