Twisted Groups and Locally Toroidal Regular Polytopes
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- by Peter McMullen and Egon Schulte PDF
- Trans. Amer. Math. Soc. 348 (1996), 1373-1410 Request permission
Abstract:
In recent years, much work has been done on the classification of abstract regular polytopes by their local and global topological type. Abstract regular polytopes are combinatorial structures which generalize the well-known classical geometric regular polytopes and tessellations. In this context, the classical theory is concerned with those which are of globally or locally spherical type. In a sequence of papers, the authors have studied the corresponding classification of abstract regular polytopes which are globally or locally toroidal. Here, this investigation of locally toroidal regular polytopes is continued, with a particular emphasis on polytopes of ranks $5$ and $6$. For large classes of such polytopes, their groups are explicitly identified using twisting operations on quotients of Coxeter groups. In particular, this leads to new classification results which complement those obtained elsewhere. The method is also applied to describe certain regular polytopes with small facets and vertex-figures.References
- Francis Buekenhout, Diagrams for geometries and groups, J. Combin. Theory Ser. A 27 (1979), no. 2, 121–151. MR 542524, DOI 10.1016/0097-3165(79)90041-4
- H. S. M. Coxeter, Twelve geometric essays, Southern Illinois University Press, Carbondale, Ill.; Feffer & Simons, Inc., London-Amsterdam, 1968. MR 0310745
- Saunders MacLane and O. F. G. Schilling, Infinite number fields with Noether ideal theories, Amer. J. Math. 61 (1939), 771–782. MR 19, DOI 10.2307/2371335
- Saunders MacLane and O. F. G. Schilling, Infinite number fields with Noether ideal theories, Amer. J. Math. 61 (1939), 771–782. MR 19, DOI 10.2307/2371335
- H. S. M. Coxeter, Regular polytopes, 3rd ed., Dover Publications, Inc., New York, 1973. MR 0370327
- H. S. M. Coxeter and W. O. J. Moser, Generators and relations for discrete groups, 4th ed., Ergebnisse der Mathematik und ihrer Grenzgebiete [Results in Mathematics and Related Areas], vol. 14, Springer-Verlag, Berlin-New York, 1980. MR 562913
- H. S. M. Coxeter and G. C. Shephard, Regular $3$-complexes with toroidal cells, J. Combinatorial Theory Ser. B 22 (1977), no. 2, 131–138. MR 438222, DOI 10.1016/0095-8956(77)90005-3
- L. Danzer and E. Schulte, Reguläre Inzidenzkomplexe. I, Geom. Dedicata 13 (1982), no. 3, 295–308 (German, with English summary). MR 690675, DOI 10.1007/BF00148235
- Andreas W. M. Dress, Regular polytopes and equivariant tessellations from a combinatorial point of view, Algebraic topology, Göttingen 1984, Lecture Notes in Math., vol. 1172, Springer, Berlin, 1985, pp. 56–72. MR 825773, DOI 10.1007/BFb0074423
- Branko Grünbaum, Regularity of graphs, complexes and designs, Problèmes combinatoires et théorie des graphes (Colloq. Internat. CNRS, Univ. Orsay, Orsay, 1976) Colloq. Internat. CNRS, vol. 260, CNRS, Paris, 1978, pp. 191–197 (English, with French summary). MR 539975
- Tadashi Nagano, The projective transformation on a space with parallel Ricci tensor, K\B{o}dai Math. Sem. Rep. 11 (1959), 131–138. MR 109330
- P. McMullen, Combinatorially regular polytopes, Mathematika 14 (1967), 142–150. MR 221384, DOI 10.1112/S0025579300003739
- Peter McMullen, Realizations of regular polytopes, Aequationes Math. 37 (1989), no. 1, 38–56. MR 986092, DOI 10.1007/BF01837943
- Peter McMullen, Locally projective regular polytopes, J. Combin. Theory Ser. A 65 (1994), no. 1, 1–10. MR 1255259, DOI 10.1016/0097-3165(94)90033-7
- P. McMullen and E. Schulte, Constructions for regular polytopes, J. Combin. Theory Ser. A 53 (1990), no. 1, 1–28. MR 1031610, DOI 10.1016/0097-3165(90)90017-Q
- P. McMullen and E. Schulte, Regular polytopes from twisted Coxeter groups, Math. Z. 201 (1989), no. 2, 209–226. MR 997223, DOI 10.1007/BF01160678
- Peter McMullen and Egon Schulte, Regular polytopes from twisted Coxeter groups and unitary reflexion groups, Adv. Math. 82 (1990), no. 1, 35–87. MR 1057442, DOI 10.1016/0001-8708(90)90083-Y
- Peter McMullen and Egon Schulte, Hermitian forms and locally toroidal regular polytopes, Adv. Math. 82 (1990), no. 1, 88–125. MR 1057443, DOI 10.1016/0001-8708(90)90084-Z
- P. McMullen and E. Schulte, Regular polytopes of type $\{4,4,3\}$ and $\{4,4,4\}$, Combinatorica 12 (1992), no. 2, 203–220. MR 1179257, DOI 10.1007/BF01204723
- Peter McMullen and Egon Schulte, Finite quotients of infinite universal polytopes, Discrete and computational geometry (New Brunswick, NJ, 1989/1990) DIMACS Ser. Discrete Math. Theoret. Comput. Sci., vol. 6, Amer. Math. Soc., Providence, RI, 1991, pp. 231–236. MR 1143300, DOI 10.1090/dimacs/006/15
- P. McMullen and E. Schulte, Higher toroidal regular polytopes. Advances Math. (to appear).
- P. McMullen and E. Schulte, Quotients of polytopes and C-groups, Discrete Comput. Geom. 11 (1994), no. 4, 453–464. MR 1273228, DOI 10.1007/BF02574018
- P. McMullen and E. Schulte, Abstract Regular Polytopes (monograph in preparation).
- B. Monson and Asia Ivić Weiss, Regular $4$-polytopes related to general orthogonal groups, Mathematika 37 (1990), no. 1, 106–118. MR 1067892, DOI 10.1112/S0025579300012845
- Egon Schulte, Reguläre Inzidenzkomplexe. II, III, Geom. Dedicata 14 (1983), no. 1, 33–56, 57–79 (German, with English summary). MR 701749, DOI 10.1007/BF00182269
- Egon Schulte, Amalgamation of regular incidence-polytopes, Proc. London Math. Soc. (3) 56 (1988), no. 2, 303–328. MR 922658, DOI 10.1112/plms/s3-56.2.303
- Egon Schulte, On a class of abstract polytopes constructed from binary codes, Discrete Math. 84 (1990), no. 3, 295–301. MR 1077140, DOI 10.1016/0012-365X(90)90134-4
- T. Bisztriczky, P. McMullen, R. Schneider, and A. Ivić Weiss (eds.), Polytopes: abstract, convex and computational, NATO Advanced Science Institutes Series C: Mathematical and Physical Sciences, vol. 440, Kluwer Academic Publishers Group, Dordrecht, 1994. MR 1322054, DOI 10.1007/978-94-011-0924-6
- Jacques Tits, Buildings of spherical type and finite BN-pairs, Lecture Notes in Mathematics, Vol. 386, Springer-Verlag, Berlin-New York, 1974. MR 0470099
- Asia Ivić Weiss, An infinite graph of girth $12$, Trans. Amer. Math. Soc. 283 (1984), no. 2, 575–588. MR 737885, DOI 10.1090/S0002-9947-1984-0737885-0
- Asia Ivić Weiss, Incidence-polytopes of type $\{6,3,3\}$, Geom. Dedicata 20 (1986), no. 2, 147–155. MR 833843, DOI 10.1007/BF00164396
Additional Information
- Peter McMullen
- Affiliation: Department of Mathematics, University College London, Gower Street, London WCIE 6BT, England
- MR Author ID: 122700
- Email: p.mcmullen@ucl.ac.uk
- Egon Schulte
- Affiliation: Department of Mathematics, Northeastern University, Boston, Massachusetts 02115
- MR Author ID: 157130
- ORCID: 0000-0001-9725-3589
- Email: schulte@neu.edu
- Received by editor(s): January 7, 1995
- Additional Notes: Supported by NSF grant DMS-9202071
- © Copyright 1996 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 348 (1996), 1373-1410
- MSC (1991): Primary 51M20
- DOI: https://doi.org/10.1090/S0002-9947-96-01561-9
- MathSciNet review: 1340181