The extremal function ex(n,H): Mantel and Turán with proofs and the unique extremal graph, supersaturation and stability, Kővári–Sós–Turán and Erdős–Stone, and the regularity and removal lemmas behind Roth, Szemerédi and Green–Tao.0/14 mastered
1 / 14
Compute the upper density d(A) of the set of even positive integers.