Pettie and Ramachandran's Optimal MST Algorithm
The minimum spanning tree problem is one of the longest-studied combinatorial optimization problems.
In CS161, you saw Prim's and Kruskal's algorithms for finding MSTs, and may have come across
Borůvka's algorithm as well. Since then, a number of algorithms have been proposed for solving MST. In
2002, Pettie and Ramachandran announced a major discovery – they had developed an MST algorithm
that was within a constant factor of the optimal MST algorithm! There's one catch, though: no one knows
how fast it is!
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