Einstein field equation
type: Concept
broader: field equation
preferred label: معادله میدان اینشتین @fa

Einstein-Maxwell equation
type: Concept
broader: field equation
preferred label: معادله اینشتین-ماکسول @fa

field equation
type: Concept
broader: equation
narrower: sine-Gordon equation
narrower: Einstein-Maxwell equation
narrower: Einstein field equation
preferred label: معادله پایکار @fa

equation
type: Concept
narrower: field equation
preferred label: معادله @fa

sine-Gordon equation
type: Concept
broader: field equation
preferred label: معادله مثلثاتی-گوردن @fa