What is the primary contribution of Hatcher in the field of combinatorial optimization? (Expert)
#1: Development of the Hatcher Algorithm
#2: Introduction of Multi-criteria Decision Making
#3: Formulation of the Hatcher-Lehmann Theorem
#4: Creation of the Hatcher-Blackwell Criterion
What algorithm is Hatcher known for in the context of network flow problems? (Genius)
#1: Ford-Fulkerson Algorithm
#2: Edmonds-Karp Algorithm
#3: Capacity Scaling Algorithm
#4: Push-Relabel Algorithm