unitary operator
preferred label: عملگر یکانی @fa
type: Concept
related: spectrum of unitary operator

duality in Banach space
preferred label: دوگانی در فضای باناخ @fa
type: Concept
related: spectrum of unitary operator

spectrum
preferred label: طیف @fa
type: Concept
narrower: spectrum of unitary operator

spectrum of unitary operator
related: duality in Banach space
related: unitary operator
broader: spectrum
preferred label: طیف عملگر یکانی @fa
type: Concept