KnowraKronecker deltaLinked fromLinked fromThe 8 pages that link to Kronecker delta, each with the reason it gives.All 8Broader topic 2Related 4Compared with 2Indicator functionBroader topic: It is the indicator of equality for discrete indices.Identity matrixRelated: Its index rule gives the identity matrix's entries: one on the diagonal and zero off it.Dirac delta functionCompared with: It is the discrete analogue; unlike the Dirac delta, it is an ordinary function on a discrete domain.Permutation matrixRelated: Its indexed form describes the entries of the identity permutation matrix.Dirac combCompared with: It is the discrete counterpart of the continuous impulses arranged in the comb.Leopold KroneckerBroader topic: The delta notation is a compact algebraic device associated with Kronecker.Einstein notationRelated: It acts as an identity tensor and can select or rename summed indices.Capelli identityRelated: The shifted determinant’s diagonal correction is expressed using index-dependent scalar shifts.