An asymptotic formula for the number of non-negative integer matrices with prescribed row and column sums

preprint2010arXivOpen access

Abstract

We count mxn non-negative integer matrices (contingency tables) with prescribed row and column sums (margins). For a wide class of smooth margins we establish a computationally efficient asymptotic formula approximating the number of matrices within a relative error which approaches 0 as m and n grow.

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