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The geometry of H4 polytopes

  • Tomme Denney , Da’Shay Hooker , De’Janeke Johnson , Tianna Robinson , Majid Butler and Sandernisha Claiborne EMAIL logo
From the journal Advances in Geometry

Abstract

We describe the geometry of an arrangement of 24-cells inscribed in the 600-cell. In Section 7 we apply our results to the even unimodular lattice E8 and show how the 600-cell transforms E8/2E8, an 8-space over the field F2, into a 4-space over F4 whose points, lines and planes are labeled by the geometric objects of the 600-cell.

MSC 2010: 52B11; 52C07
  1. Communicated by: W. M. Kantor

  2. Funding: The authors were supported by the Student Research Fellowship program at McDonogh 35 High School in New Orleans.

Acknowledgements

The authors thank Professor Cathy Kriloff of Idaho State University for suggesting they use the techniques they developed in [1] to study H3 (and H4) symmetry, they thank their advisor Rich Margolin for several helpful conversations, and they thank the referee for a number of suggestions that improved the text and corrected the terminology of this paper.

References

[1] M. Butler et al., The Unknown Subgroup of Aut(E8). Preprint 2017. arXiv:1709.05532 [math.GR]Search in Google Scholar

[2] J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker, R. A. Wilson, Atlas of finite groups. Oxford Univ. Press 1985. MR827219 Zbl 0568.20001Search in Google Scholar

[3] J. H. Conway, N. J. A. Sloane, Sphere packings, lattices and groups. Springer 1999. MR1662447 Zbl 0915.5200310.1007/978-1-4757-6568-7Search in Google Scholar

[4] H. S. M. Coxeter, Regular compound polytopes in more than four dimensions. J. Math. Phys., Mass. Inst. Techn. 12 (1933), 334–345. Zbl 0007.1260110.1002/sapm1933121334Search in Google Scholar

[5] H. S. M. Coxeter, Regular polytopes. Third edition. Dover Publications, New York 1973. MR0370327 Zbl 0296.50009Search in Google Scholar

[6] P. Du Val, Homographies, quaternions and rotations. Clarendon Press, Oxford 1964. MR0169108 Zbl 0128.15403Search in Google Scholar

[7] R. H. Dye, The simple group FH(8, 2) of order 212 ⋅ 35 ⋅ 52 ⋅ 7 and the associated geometry of triality. Proc. London Math. Soc. (3) 18 (1968), 521–562. MR0225877 Zbl 0159.3110410.1112/plms/s3-18.3.521Search in Google Scholar

[8] R. L. Griess, Jr., C. H. Lam, A moonshine path for 5A and associated lattices of ranks 8 and 16. J. Algebra331 (2011), 338–361. MR2774662 Zbl 1283.2000910.1016/j.jalgebra.2010.11.013Search in Google Scholar

[9] N. Jacobson, Basic algebra. I. 2nd edition, Dover 2005. MR780184 Zbl 0557.16001Search in Google Scholar

[10] D. E. Littlewood, The Groups of Regular Solids in n Dimensions. Proc. London Math. Soc. (2) 32 (1931), 10–20. MR1575981 JFM 56.0133.0510.1112/plms/s2-32.1.10Search in Google Scholar

[11] L. Schläfli, Réduction ďune intégrale multiple, qui comprend ľarc de cercle et ľaire du triangle sphérique comme cas particuliers, J. Math. Pures Appl. 20 (1855), 359–394. (Gesammelte Mathematische Abhandlungen, Band I, pages 164–190, Springer, Basel 1950)Search in Google Scholar

[12] P. H. Schoute, Mehrdimensionale Geometrie. II. Teil. Die Polytope. G. J. Göschen, Leipzig 1905. JFM 36.0600.03Search in Google Scholar

[13] D. M. Y. Sommerville, An introduction to the geometry of n dimensions. Methuen & Co., London 1929. JFM 55.0953.01Search in Google Scholar

[14] J. Tits, Quaternions over Q(5), Leech’s lattice and the sporadic group of Hall-Janko. J. Algebra63 (1980), 56–75. MR568564 Zbl 0436.2000410.1016/0021-8693(80)90025-3Search in Google Scholar

[15] R. A. Wilson, The geometry of the Hall-Janko group as a quaternionic reflection group. Geom. Dedicata20 (1986), 157–173. MR833844 Zbl 0589.5102310.1007/BF00164397Search in Google Scholar

Received: 2018-08-15
Revised: 2019-05-25
Published Online: 2020-07-05
Published in Print: 2020-07-28

© 2020 Walter de Gruyter GmbH, Berlin/Boston

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