All reports by Author Chris Bourke:

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TR09-049
| 5th May 2009
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Derrick Stolee, Chris Bourke, N. V. Vinodchandran#### A log-space algorithm for reachability in planar DAGs with few sources

Derrick Stolee, Chris Bourke, N. V. Vinodchandran

Designing algorithms that use logarithmic space for graph reachability problems is fundamental to complexity theory. It is well known that for general directed graphs this problem is equivalent to the NL vs L problem. For planar graphs, the question is not settled. Showing that the planar reachability problem is NL-complete ... more >>>