isomorphic designs
preferred label: طرح‌های یک‌ریخت @fa
type: Concept
broader: incidence structure

incidence matrix
preferred label: ماتریس وقوع @fa
type: Concept
related: incidence structure

block intersection
preferred label: اشتراک بلوکی @fa
type: Concept
broader: incidence structure

block graph
preferred label: گراف بلوکی @fa
type: Concept
broader: incidence structure

t-design
preferred label: t-طرح @fa
type: Concept
broader: incidence structure

incidence structure
narrower: t-design
narrower: block intersection
narrower: block graph
narrower: isomorphic designs
narrower: dual design
broader: design theory
preferred label: ساختار وقوع @fa
related: projective plane
related: incidence matrix
type: Concept

dual design
preferred label: طرح دوگان @fa
type: Concept
broader: incidence structure

design theory
preferred label: نظریه طرح‌ها @fa
type: Concept
narrower: incidence structure

projective plane
preferred label: صفحه تصویری @fa
type: Concept
related: incidence structure