Configurations of rank- 40 r extremal even unimodular lattices ( r = 1 , 2 , 3 )

Scott Duke Kominers[1]; Zachary Abel[2]

  • [1] Department of Mathematics Harvard University c/o 8520 Burning Tree Road Bethesda, Maryland, 20817, USA
  • [2] Department of Mathematics Harvard University c/o 17134 Earthwind Drive Dallas, Texas, 75248, USA

Journal de Théorie des Nombres de Bordeaux (2008)

  • Volume: 20, Issue: 2, page 365-371
  • ISSN: 1246-7405

Abstract

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We show that if L is an extremal even unimodular lattice of rank 40 r with r = 1 , 2 , 3 , then L is generated by its vectors of norms 4 r and 4 r + 2 . Our result is an extension of Ozeki’s result for the case r = 1 .

How to cite

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Kominers, Scott Duke, and Abel, Zachary. "Configurations of rank-${40r}$ extremal even unimodular lattices (${r=1,2,3}$)." Journal de Théorie des Nombres de Bordeaux 20.2 (2008): 365-371. <http://eudml.org/doc/10841>.

@article{Kominers2008,
abstract = {We show that if $L$ is an extremal even unimodular lattice of rank $40r$ with $r=1,2,3$, then $L$ is generated by its vectors of norms $4r$ and $4r+2$. Our result is an extension of Ozeki’s result for the case $r=1$.},
affiliation = {Department of Mathematics Harvard University c/o 8520 Burning Tree Road Bethesda, Maryland, 20817, USA; Department of Mathematics Harvard University c/o 17134 Earthwind Drive Dallas, Texas, 75248, USA},
author = {Kominers, Scott Duke, Abel, Zachary},
journal = {Journal de Théorie des Nombres de Bordeaux},
keywords = {Even unimodular lattices; extremal lattices; weighted theta series; even unimodular lattices; harmonic theta series; spherical designs},
language = {eng},
number = {2},
pages = {365-371},
publisher = {Université Bordeaux 1},
title = {Configurations of rank-$\{40r\}$ extremal even unimodular lattices ($\{r=1,2,3\}$)},
url = {http://eudml.org/doc/10841},
volume = {20},
year = {2008},
}

TY - JOUR
AU - Kominers, Scott Duke
AU - Abel, Zachary
TI - Configurations of rank-${40r}$ extremal even unimodular lattices (${r=1,2,3}$)
JO - Journal de Théorie des Nombres de Bordeaux
PY - 2008
PB - Université Bordeaux 1
VL - 20
IS - 2
SP - 365
EP - 371
AB - We show that if $L$ is an extremal even unimodular lattice of rank $40r$ with $r=1,2,3$, then $L$ is generated by its vectors of norms $4r$ and $4r+2$. Our result is an extension of Ozeki’s result for the case $r=1$.
LA - eng
KW - Even unimodular lattices; extremal lattices; weighted theta series; even unimodular lattices; harmonic theta series; spherical designs
UR - http://eudml.org/doc/10841
ER -

References

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  1. C. Bachoc, G. Nebe, B. Venkov, Odd unimodular lattices of minimum 4. Acta Arithmetica 101 (2002), 151–158. Zbl0998.11034MR1880305
  2. J. H. Conway, N. J. A. Sloane, Sphere Packing, Lattices and Groups (3rd edition). Springer-Verlag, New York, 1999. Zbl0915.52003MR1662447
  3. W. Ebeling, Lattices and Codes (2nd edition). Vieweg, Germany, 2002. Zbl1030.11030MR1938666
  4. N. D. Elkies, On the quotient of an extremal Type II lattice of rank 40 , 80 , or 120 by the span of its minimal vectors. Preprint. 
  5. S. D. Kominers, Configurations of extremal even unimodular lattices. To appear, Int. J. Num. Thy. (Preprint arXiv:0706.3082, 21 Jun 2007.) Zbl1241.11043
  6. M. Ozeki, On even unimodular positive definite quadratic lattices of rank 32 . Math. Z. 191 (1986), 283–291. Zbl0564.10016MR818672
  7. M. Ozeki, On the structure of even unimodular extremal lattices of rank 40 . Rocky Mtn. J. Math. 19 (1989), 847–862. Zbl0706.11018MR1043254
  8. M. Ozeki, On the configurations of even unimodular lattices of rank 48 . Arch. Math. 46 (1986), 247–287. Zbl0571.10020MR829816
  9. J.-P. Serre, A Course in Arithmetic. Springer-Verlag, New York, 1973. Zbl0256.12001MR344216

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