derived design
preferred label: طرح مشتق @fa
type: Concept
related: Gewirtz graph

2-design
preferred label: 2-طرح @fa
type: Concept
related: Gewirtz graph

block graph
preferred label: گراف بلوکی @fa
type: Concept
narrower: Gewirtz graph

Gewirtz graph
related: derived design
related: quasi-residual design
related: 2-design
broader: block graph
preferred label: گراف ژئرتس @fa
type: Concept

quasi-residual design
preferred label: طرح شبه‌باقیمانده @fa
type: Concept
related: Gewirtz graph