Linked from
The 13 pages that link to Cook–Levin theorem, each with the reason it gives.
NP-hardnessRelated: It provides the starting point for many reductions proving NP-hardness.
Leonid LevinRelated: Levin proved an independent version establishing the same landmark result.
Stephen CookBroader topic: Cook’s 1971 result established the first NP-complete problem.
Richard M. KarpRelated: It supplied the starting point for the reduction chain behind Karp’s list.