This is the 5th research thread of polymath3 studying the polynomial Hirsch conjecture. As you may remember, we are mainly interested in an abstract form of the problem about families of sets. (And a related version about families of multisets.)
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cstheoryTCS blog aggregatorPolynomial Hirsch Conjecture 5: Abstractions and Counterexamples. « Combinatorics and more: http://bit.ly/hMQsZW