Abstract
We investigate whether it is the case that for every convexd-polytopeP and pair of distinct verticesx andy ofP, there exists a hyperplane passing throughx andy which cutsP into two smallerd-polytopes, one of which has fewer facets thanP. Such a result would lead to inductive proofs of Conjectures 1 and 2 below. However, ford≥4, our answer is in the negative.
Similar content being viewed by others
References
Balinski, M. L.: On the graph structure of convex polyhedra inn-space,Pacific J. Math. 11 (1961), 431–434.
Bezdek, K., Bisztriczky, T. and Connelly, R.: On hyperplanes and polytopes,Monats. Math. 109 (1990), 39–48.
Brondsted, A.:An Introduction to Convex Polytopes, Springer-Verlag, 1983.
Problems Presented at the DIMACS Workshop on Polytopes and Convex Sets, Rutgers University, New Brunswick; 8–12 January 1990.
Grünbaum, B.:Convex Polytopes, Wiley Interscience, 1966.
Grünbaum, B. and Motzkin, T. S.: On polyhedral graphs, in V. Klee (ed.),Convexity, Amer. Math. Soc. Proc. Symp. Pure Math. Vol 7, 1963, pp. 285–290.
Emamy-Khansary, M. R.: On the cut-number of the 5-cube,Proc. the Twentieth Southeastern Conf. on Combinatorics, Graph Theory and Computing (Boca Raton, FL, 1989);Congr. Numer. 72 (1990), 179–186.
Khovanskii, A. G.: Hyperplane sections of polytopes, toric varieties and discrete groups in Lobachevskii space,Funktsional Anal. Prilozhen 20 (1986), 50–61.
Kincses, J.: Convex hull representation of cut polytopes, Preprint, 1988.
Kleinschmidt, P. and Pachner, U.: Shadow-boundaries and cuts of convex polytopes,Mathematika 27 (1980), 58–63.
Lockeberg, E. R.: in J. Tolke and J. M. Wills (eds),Contributions to Geometry, Proc. of the Geometry Symposium in Siegen, Problem57, p. 269, 1978.
McMullen, P., Gallivan, S. and Lockeberg, E. R.: Complete subgraphs of the graphs of convex polytopes,Discrete Math. 34 (1981), 25–29.
O'Neil, P. E.: Hyperplane cuts of ann-cube,Discrete Math. 1 (2) (1971), 193–195.
Perles, M. A.: Personal communication.
Prabhu, N.: Properties of convex polytopes, Ph.D. Dissertation, New York University, 1991.
Shephard, G. C.: Sections and projections of convex polytopes,Mathematika 19 (1972), 144–162.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jockusch, W., Prabhu, N. Cutting a polytope. Geom Dedicata 54, 307–312 (1995). https://doi.org/10.1007/BF01265345
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01265345