Exact bounds for some hypergraph saturation problems

On generalized graphs

B. Bollobás · Acta Mathematica Academiae Scientiarum Hungaricae · 1965 · 392 citations

Solution of a problem of Ulam

John Michael Rassias · Journal of Approximation Theory · 1989 · 321 citations

Natural Sciences, Mathematics, Applied Mathematics +2

A Problem in Graph Theory

P. Erdös, A. Hajnal, J. W. Moon · American Mathematical Monthly · 1964 · 276 citations

Natural Sciences, Computer Science, Mathematics +11

An Extremal Problem for two Families of Sets

Péter Frankl · European Journal of Combinatorics · 1982 · 252 citations

Natural Sciences, Mathematics, Set Theory +5

An extremal problem for sets with applications to graph theory

Noga Alon · Journal of Combinatorial Theory Series A · 1985 · 93 citations

Natural Sciences, Computer Science, Mathematics +10