block intersection
preferred label: اشتراک بلوکی @fa
type: Concept
related: quasi-symmetric design

quasi-symmetric design
related: block intersection
related: strongly regular graph
broader: 2-design
preferred label: طرح شبه‌متقارن @fa
type: Concept

strongly regular graph
preferred label: گراف قوی‌منتظم @fa
type: Concept
related: quasi-symmetric design

2-design
preferred label: 2-طرح @fa
type: Concept
narrower: quasi-symmetric design