Classification of eight-dimensional perfect forms
Authors:
Mathieu Dutour Sikirić, Achill Schürmann and Frank Vallentin
Journal:
Electron. Res. Announc. Amer. Math. Soc. 13 (2007), 21-32
MSC (2000):
Primary 11H31, 11H55; Secondary 52B55
DOI:
https://doi.org/10.1090/S1079-6762-07-00171-0
Published electronically:
April 11, 2007
MathSciNet review:
2300003
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Abstract: In this paper, we classify the perfect lattices in dimension $8$. There are $10916$ of them. Our classification heavily relies on exploiting symmetry in polyhedral computations. Here we describe algorithms making the classification possible.
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[Ba61]balinski M.L. Balinski, On the graph structure of convex polyhedra in $n$-space, Pacific J. Math. 11 (1961) 431–434.
[Ba96]baril J-L. Baril, Autour de l’algorithme de Voronoi: Construction de réseaux Euclidiens, Thèse, Bordeaux (1996).
[Ba57]barnes E.S. Barnes, The complete enumeration of extreme senary forms, Phil. Trans. Roy. Soc. London 249-A (1957) 461–506.
[BaMa05]batutmartinet C. Batut and J. Martinet, A catalogue of perfect lattices, http://www.math. u-bordeaux.fr/˜martinet/.
[Bl35]blichfeldt H.F. Blichfeldt, The minimum value of positive quadratic forms in six, seven and eight variables, Math. Z. 39 (1935) 1–15.
[Br00]brinkmann G. Brinkmann, Isomorphism rejection in structure generation programs, Discrete mathematical chemistry, DIMACS Ser. Discrete Math. Theoret. Comput. Sci. 51 (Amer. Math. Soc., 2000) 25–38.
[ChRo99]robbins C.S. Chan and D.P. Robbins, On the volume of the polytope of doubly stochastic matrices, Experiment. Math. 8-3 (1999) 291–300.
[ChLo97]porta T. Christof and A. Löbel, PORTA: Polyhedron representation transformation algorithm (ver 1.3.1), 1997, http://www.zib.de/Optimization/Software/Porta/.
[ChRe96]CR T. Christof and G. Reinelt, Combinatorial optimization and small polytopes, Top (Spanish Statistical and Operations Research Society) 4 (1996) 1–64.
[Co93]cohen H. Cohen, A course in computational algebraic number theory, Graduate texts in mathematics, Springer–Verlag, 1993.
[CoKu04]cohn H. Cohn and A. Kumar, Optimality and uniqueness of the Leech lattice among lattices, http://www.arxiv.org/math.MG/0403263.
[CoSl98]CS J.H. Conway and N.J.A. Sloane, Sphere Packings, Lattices and Groups, third edition, volume 290 of Grundlehren der mathematischen Wissenschaften, Springer–Verlag, 1998.
[CoSl88]CSperfect J.H. Conway and N.J.A. Sloane, Low-dimensional lattices. III. Perfect forms, Proc. Roy. Soc. London Ser. A 418-1854 (1988) 43–80.
[Co51]coxeter H.S.M. Coxeter, Extreme forms, Canad. J. Math. 3 (1951) 391–441.
[DeDu03]mining M. Deza and M. Dutour, Cones of metrics, hemi-metrics and super-metrics, Annals of the European Academy of Sciences (2003) 141–162.
[DFPS01]DFPS A. Deza, K. Fukuda, D. Pasechnik, and M. Sato, On the skeleton of the metric polytope, Lecture Notes in Computer Science 2098 Springer-Verlag, Berlin (2001) 125–136.
[Fu95]cdd K. Fukuda, cdd+ reference manual, Institute for operations research, Swiss Federal Institute of Technology, Zurich, Switzerland, 1995, http://www.ifor.math.ethz.ch/ ˜fukuda/cdd_home/cdd.html.
[Ga40]gauss C.F. Gauss, Untersuchungen über die Eigenschaften der positiven ternären quadratischen Formen von Ludwig August Seeber, J. Reine Angew. Math. 20 (1840) 312–320.
[GAP05]GAP The GAP Group, GAP — Groups, Algorithms, and Programming, Version 4.4.6; 2005. http://www.gap-system.org.
[Ja92]jaquet92 D.O. Jaquet-Chiffelle, Description des voisines de $E_ 7,\;D_ 7,\;D_ 8$ et $D_ 9$, Sém. Théor. Nombres Bordeaux 4-2 (1992) 273–377.
[Ja93]jaquet D.O. Jaquet, Énumération complète des formes parfaites en dimension $7$, Ann. Inst. Fourier 43-1 (1993) 21–55.
[KaSc03]kaibelschwartz V. Kaibel and A. Schwartz, On the complexity of polytope isomorphism problems, Graphs Comb. 19-2 (2003) 215–230.
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[KoZo77]zolotarev77 A.N. Korkine and E.I. Zolotarev, Sur les formes quadratiques positives, Math. Ann. 11 (1877) 242–292.
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[Ma03]martinet J. Martinet, Perfect lattices in Euclidean spaces, Springer, 2003.
[Ma97]pd A. Marzetta, pd - C-implementation of the primal dual algorithm, 1997, http://www. cs.unb.ca/profs/bremner/pd/.
[MKa05]nauty B.D. McKay, The nauty program, http://cs.anu.edu.au/people/bdm/nauty/.
[Mo44]mordell L.J. Mordell, Observation on the minimum of a positive quadratic forms in eight variables, J. London Math. Soc. 19 (1944) 3–6.
[Na96]napias H. Napias, Étude expérimentale et algorithmique des réseaux Euclidiens, Thèse, Bordeaux, 1996.
[PlOpSc98]carat W. Plesken, J. Opgenorth, and T. Schulz, CARAT—a package for mathematical crystallography, J. Appl. Cryst. 31 (1998) 827–828.
[PlSo97]pleskensouvignier W. Plesken and B. Souvignier, Computing isometries of lattices, J. Symbolic Computation 24 (1997) 327–334.
[Ri06]riener C. Riener, On extreme forms in dimension $8$, to appear in J. Théorie des Nombres de Bordeaux, http://www.math.u-bordeaux.fr/˜martinet/riener4.pdf.
[Ry70]ryshkov1970 S.S. Ryshkov, The polyhedron $\mu (m)$ and certain extremal problems of the geometry of numbers, Soviet Math. Dokl. 11 (1970) 1240–1244, translation from Dokl. Akad. Nauk SSSR 194 (1970) 514–517.
[RyBa79]baranovski S.S. Ryshkov, E.P. Baranovski, Classical methods in the theory of lattice packings, Russian Math. Surveys 34 (1979) 1–68, translation of Uspekhi Mat. Nauk 34 (1979) 3–63.
[Sch86]schrijver A. Schrijver, Theory of Linear and Integer Programming, Wiley, 1986.
[Sh05]shepherd N.I. Shepherd-Barron, Perfect forms and the moduli space of abelian varieties, Invent. Math. 163-1 (2006) 25–45.
[So05]soule C. Soulé, Perfect forms and the Vandiver conjecture, J. Reine Angew. Math. 517 (1999) 209–221.
[Swa85]Swa G. Swart, Finding the convex hull facet by facet, J. Algorithms 6 (1985) 17–48.
[Va99]vallentinSV F. Vallentin, SHVEC, http://www.math.uni-magdeburg.de/lattice_geometry/.
[Ve80]vetchinkin N.M. Vetchinkin, Uniqueness of the classes of positive quadratic forms on which the values of Hermite constants are attained for $6\leq n\leq 8$, Proc. Steklov Inst. Math. 152 (1980) 34–86.
[Vo08]voronoi G. Voronoi, Nouvelles applications des paramètres continues à la théorie des formes quadratiques 1: Sur quelques propriétés des formes quadratiques positives parfaites, J. Reine Angew. Math 133 (1908) 97–178.
[Wa71]watson G.L. Watson, The number of minimum points of a positive quadratic form, Dissertationes Math. Rozprawy Mat. 84 (1971) 1–43.
[Zi95]ziegler G. Ziegler, Lectures on polytopes, Springer Verlag, 1995.
[Zo99]zong C. Zong, Sphere packings, Springer Verlag, 1999.
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Additional Information
Mathieu Dutour Sikirić
Affiliation:
Institut Rudjer Bos̆ković, Zagreb, Croatia
Email:
Mathieu.Dutour@ens.fr
Achill Schürmann
Affiliation:
Otto-von-Guericke-University, Magdeburg, Germany
Email:
Achill.Schuermann@Mathematik.Uni-Magdeburg.de
Frank Vallentin
Affiliation:
CWI, Amsterdam, The Netherlands
Email:
f.vallentin@cwi.nl
Received by editor(s):
September 15, 2006
Published electronically:
April 11, 2007
Additional Notes:
The second and the third author were supported by the Deutsche Forschungsgemeinschaft (DFG) under grant SCHU 1503/4-1. During the work on this paper the third author was also partially supported by the Edmund Landau Center for Research in Mathematical Analysis and Related Areas, sponsored by the Minerva Foundation (Germany), and he was partially supported by the Netherlands Organization for Scientific Research under grant NWO 639.032.203.
Communicated by:
Robert Griess
Article copyright:
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American Mathematical Society
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