cosine function
type: Concept
preferred label: تابع کسینوس @fa
related: operator cosine functions

operator
type: Concept
preferred label: عملگر @fa
related: operator cosine functions

operator cosine functions
type: Concept
broader: group of linear operators
preferred label: عملگر توابع کسینوس @fa
related: cosine function
related: operator

group of linear operators
type: Concept
narrower: operator cosine functions
preferred label: گروه عملگرهای خطی @fa