EntityQ5422299· pop 5· linked from 30 articlesextremal combinatoricsSign in to savestudy of maximum or minimum size of a set under given conditionsConnectionsmathematicsEntitynumberEntityInternational Standard Book NumberEntitysetEntitydigital object identifierEntityvector spaceEntitycombinatoricsEntitysubsetEntitygraphEntityJSTOREntityclassEntityRamsey theoryEntityNoga AlonEntityextremal graph theoryEntitytheorem on friends and strangersEntityPéter FranklEntityVojtěch RödlEntitySperner's theoremEntityFisher's inequalityEntityErdős–Ko–Rado theoremEntityCategoriesCombinatorial optimizationCombinatoricsExtremal combinatorics