MathCastle
Graph TheoryMediumExtremal Graph Theory and Ramsey Theory

Extremal Graph Theory and Ramsey Theory · Medium problem

Using R(2,4)=4R(2,4)=4, R(3,3)=6R(3,3)=6 and the recursion R(s,t)≤R(s−1,t)+R(s,t−1)R(s,t)\le R(s-1,t)+R(s,t-1), what upper bound do you get for R(3,4)R(3,4)?