Geodesic
On \(Q\)-polynomial association schemes of small class
Sho Suda1
1Tohoku University
The electronic journal of combinatorics, Tome 19 (2012) no. 1

Voir la notice de l'article provenant de la source The Electronic Journal of Combinatorics website

Zbl arXiv
We show an inequality involving the third largest or second smallest dual eigenvalues of $Q$-polynomial association schemes of class at least three. Also we characterize dual-tight $Q$-polynomial association schemes of class three. Our method is based on tridiagonal matrices and can be applied to distance-regular graphs as well.
DOI : 10.37236/2157
Classification : 05E30, 05C12, 05B30
Mots-clés : distance-regular graph, Q-polynomial association scheme

Sho Suda  1

1 Tohoku University 
Sho Suda. On \(Q\)-polynomial association schemes of small class. The electronic journal of combinatorics, Tome 19 (2012) no. 1. doi: 10.37236/2157
@article{10_37236_2157,
     author = {Sho Suda},
     title = {On {\(Q\)-polynomial} association schemes of small class},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {1},
     doi = {10.37236/2157},
     zbl = {1244.05237},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2157/}
}
TY  - JOUR
AU  - Sho Suda
TI  - On \(Q\)-polynomial association schemes of small class
JO  - The electronic journal of combinatorics
PY  - 2012
VL  - 19
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.37236/2157/
DO  - 10.37236/2157
ID  - 10_37236_2157
ER  - 
%0 Journal Article
%A Sho Suda
%T On \(Q\)-polynomial association schemes of small class
%J The electronic journal of combinatorics
%D 2012
%V 19
%N 1
%U http://geodesic.mathdoc.fr/articles/10.37236/2157/
%R 10.37236/2157
%F 10_37236_2157

Cité par Sources :