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JOURNAL OF
ALGEBRAIC
COMBINATORICS

  Editors-in-chief: C. A. Athanasiadis, T. Lam, A. Munemasa, H. Van Maldeghem
ISSN 0925-9899 (print) • ISSN 1572-9192 (electronic)
 

Homogeneity of a Distance-Regular Graph Which Supports a Spin Model

Brian Curtin1 and Kazumasa Nomura2
1Department of Mathematics University of South Florida 4202 E. Fowler Ave PHY 114 Tampa FL 33647 USA
2College of Liberal Arts and Sciences Tokyo Medical and Dental University Kohnodai, Ichikawa 272-0827 Japan

DOI: 10.1023/B:JACO.0000030702.58352.f7

Abstract

A spin model is a square matrix that encodes the basic data for a statistical mechanical construction of link invariants due to V.F.R. Jones. Every spin model W is contained in a canonical Bose-Mesner algebra N \mathcal{N} ( W). In this paper we study the distance-regular graphs M \mathcal{M} satisfies W M \mathcal{M} N \mathcal{N} ( W). Suppose W has at least three distinct entries. We show that Gamma is 1-homogeneous and that the first and the last subconstituents of Gamma are strongly regular and distance-regular, respectively.

Pages: 257–272

Keywords: distance-regular graph; 1-homogeneous; spin model

Full Text: PDF

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