Dirac operator
type: Concept
broader: invariant differential operator
preferred label: عملگر دیراک @fa

differential operator
type: Concept
broader: invariant differential operator
preferred label: عملگر دیفرانسیل @fa

gradient operator
type: Concept
broader: invariant differential operator
preferred label: عملگر گرادیان @fa

invariant differential operator
type: Concept
broader: special operators
narrower: differential operator
narrower: gradient operator
narrower: Dirac operator
preferred label: عملگر دیفرانسیل ناوردا @fa

special operators
type: Concept
narrower: invariant differential operator
preferred label: عملگرهای خاص @fa