EntityQ3090387· pop 10· linked from 20 articlesHoffman–Singleton graphSign in to savenode-link graph with 50 vertices and 175 edges, the smallest possible 7-regular graph of girth 5Connectionsgroup actionEntityAlan HoffmanEntitymathematicsEntityInternational Standard Book NumberEntityintegerEntitydigital object identifierEntityInternational Standard Serial NumberEntitypentagonEntitygroupEntitygraph theoryEntitygraphEntitybinary operationEntitypermutationEntityQ118398EntitypentagramEntitymodular arithmeticEntityCambridge University PressEntitydisjoint setsEntityMathWorldEntitynodeEntityCategoriesIndividual graphsRegular graphsStrongly regular graphs