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Proofs without words

May 15, 2010

Proving that a binary matrix is totally unimodular

Sep 3, 2010

What are the applications of hypergraphs?

Mar 9, 2010

Funky congruences

May 22, 2010

Bounds on strong vertex colourings of regular hypergraphs?

Sep 23, 2010

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Does this approach for the Poincaré conjecture work?

May 6, 2010

What non-standard model of arithmetic does Hofstadter reference in GEB?

Sep 18, 2018

How much must deleting a spanning tree reduce edge-connectivity?

Sep 5, 2010

Finding Two Rainbow Spanning Trees

May 24, 2010

Cliques of hyperedges

Oct 5, 2010

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