Abstract

We present two algorithms for the problem of finding a minimum transversal in a hypergraph of rank 3, also known as the 3-Hitting Set problem. This problem is a natural extension of the vertex cover problem for ordinary graphs. The first algorithm runs in time O(1.6538 n ) for a hypergraph with n vertices, and needs polynomial space. The second algorithm uses exponential space and runs in time O(1.6316 n ).

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