Parseval identity
type: Concept
preferred label: اتحاد پارسوال @fa
related: fight frame

window function
type: Concept
preferred label: تابع پنجره‌ای @fa
related: fight frame

fight frame
type: Concept
broader: frame (linear algebra)
preferred label: قاب تنگ @fa
related: window function
related: Parseval identity

frame (linear algebra)
type: Concept
narrower: fight frame
preferred label: قاب_جبرخطی @fa