EntityQ3026495· pop 10· linked from 33 articlesPaley graphSign in to savenode-link graph of elements of a finite field, adjacent when their difference is a quadratic residueConnectionsmathematicsEntityInternational Standard Book NumberEntitynumber theoryEntitydigital object identifierEntityPaul ErdősEntitygraph theoryEntitytorusEntitysubsetEntitygraphEntityif and only ifEntityidentity matrixEntityEuler characteristicEntityOn-Line Encyclopedia of Integer SequencesEntityfinite fieldEntitynodeEntityadjacency matrixEntityHamiltonian pathEntitydirected graphEntityAlfréd RényiEntityRonald GrahamEntityCategoriesNumber theoryParametric families of graphsRegular graphsStrongly regular graphs