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43
What are your favorite instructional counterexamples?
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Is there a 7-regular graph on 50 vertices with girth 5? What about 57-regular on 3250 vertices?
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Suggestions for good notation
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Existence of a zero-sum subset
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Most memorable titles
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An approximate algorithm for finding Steiner Forest in a graph.
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Finding a subgraph with slightly large size in planar graphs