Transactions of the American Mathematical Society, Vol. 332, No. 2 (Aug., 1992), pp. 729-756 (28 pages) In this paper we present several results and open problems about log-concavity properties of ...
Consider an urn model where at each step one of q colors is sampled according to some probability distribution and a ball of that color is placed in an urn. The distribution of assigning balls to urns ...
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