Some results on the Krein parameters of an association scheme

We consider association schemes with d classes and the underlying Bose- Mesner algebra, A. Then, by taking into account the relationship between the Hadamard and the Kronecker products of matrices and making use of some matrix techniques over the idempotents of the unique basis of minimal orthogonal...

Full description

Bibliographic Details
Main Author: Mano, Vasco Moço (author)
Other Authors: Martins, Enide Andrade (author), Vieira, Luís Almeida (author)
Format: bookPart
Language:eng
Published: 2016
Subjects:
Krein parameters
Association schemes
Online Access:http://hdl.handle.net/10773/15014
Country:Portugal
Oai:oai:ria.ua.pt:10773/15014
Description
Summary:We consider association schemes with d classes and the underlying Bose- Mesner algebra, A. Then, by taking into account the relationship between the Hadamard and the Kronecker products of matrices and making use of some matrix techniques over the idempotents of the unique basis of minimal orthogonal idempotents of A , we prove some results over the Krein parameters of an association scheme.

Similar Items