Concepedia
Proceedings of the London Mathematical Society · 1952 · 243 citations · 0 references
Natural SciencesMathematicsCombinatoricsDiscrete MathematicsSet TheoryAlgebraic CombinatoricsAxiomatic Set TheoryClassificationCombinatorial EnumerationCombinatorial Set TheoryEnumerative CombinatoricsFamilies Of SubsetsSet Partitions