Regular graphs of girth 5 from elliptic semiplanes of type C

A well-known technique to construct regular graphs with girth 5 is the amalgamation into the incidence graphs Cq and Lq, elliptic semiplanes of type C and L respectively, where q is a prime power. The case q odd has extensively been studied by means of amalgamations into Lq. In this paper we provide...

Full description

Bibliographic Details
Authors: Abajo Casado, María Encarnación, Bendala García, Manuel Francisco
Format: article
Status:Versión aceptada para publicación
Publication Date:2021
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/162372
Online Access:https://hdl.handle.net/11441/162372
https://doi.org/10.1016/j.disc.2021.112343
Access Level:Open access
Keyword:Regular graph
Cage
Girth
Amalgam
Elliptic semiplane of type C
Description
Summary:A well-known technique to construct regular graphs with girth 5 is the amalgamation into the incidence graphs Cq and Lq, elliptic semiplanes of type C and L respectively, where q is a prime power. The case q odd has extensively been studied by means of amalgamations into Lq. In this paper we provide new families of small regular graphs of girth 5 constructed by amalgamation into Cq using finite fields of even order.