• Tidak ada hasil yang ditemukan

resume08_2. 64KB Jun 04 2011 12:07:03 AM

N/A
N/A
Protected

Academic year: 2017

Membagikan "resume08_2. 64KB Jun 04 2011 12:07:03 AM"

Copied!
1
0
0

Teks penuh

(1)

Journal de Th´

eorie des Nombres

de Bordeaux

20

(2008), 365–371

Configurations of rank-40

r

extremal even

unimodular lattices (

r

= 1

,

2

,

3)

par

Scott Duke KOMINERS

et

Zachary ABEL

R´esum´e. Nous montrons que, si L est un r´eseau unimodulaire

pair extr´emal de rang 40r avec r = 1,2,3, alors L est engendr´e par ses vecteurs de normes 4r et 4r+ 2. Notre r´esultat est une extension de celui d’Ozeki pour le casr= 1.

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 caser= 1.

Scott DukeKominers

Department of Mathematics Harvard University

c/o 8520 Burning Tree Road Bethesda, Maryland, 20817, USA

E-mail:[email protected]

URL:http://www.scottkom.com/ ZacharyAbel

Department of Mathematics Harvard University

c/o 17134 Earthwind Drive Dallas, Texas, 75248, USA

E-mail:[email protected]

URL:http://people.fas.harvard.edu/ zabel/

Manuscrit re¸cu le 5 novembre 2007.

Referensi

Dokumen terkait

Charles Delzell (Louisiana State University, USA) 14.. Andreas Dress (University of Bielefeld,

Using percolation on the branches of a Galton-Watson tree, Aldous and Pitman constructed by time-reversal in [4] an inhomogeneous tree-valued Markov process that starts from the

Mathematics Department University of South Carolina Columbia, SC 29208, USA E-mail

University of British Columbia 1984 Mathematics Road

Department of Mathematics Texas A&M University College Station, Texas 77843. E-mail

Department of Mathematics Armstrong Atlantic State University 11935 Abercorn St. Savannah, GA

School of Mathematical Sciences University of Nottingham. University Park, Nottingham, NG7 2RD, UK E-mail

If we want to compute a farthest distance tree connecting a source vertex s to several destination vertices, we can use the same transformations and then use the solution for