Ramsey theory
type: Concept
broader: extremal combinatorics
preferred label: نظریه رمزی @fa

extremal set theory
type: Concept
broader: extremal combinatorics
preferred label: نظریه مجموعه‌های اکسترمال @fa

extremal combinatorics
type: Concept
broader: combinatorics
narrower: extremal set theory
narrower: Ramsey theory
narrower: transversal
preferred label: ترکیبیات اکسترمال @fa

combinatorics
type: Concept
narrower: extremal combinatorics
preferred label: ترکیبیات @fa

transversal
type: Concept
broader: extremal combinatorics
preferred label: تراگرد @fa