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|Abstract:||This paper investigates entropic matroids, that is, matroids whose rank function is given as the Shannon entropy of random variables. In particular, we consider p-entropic matroids, for which the random variables each have support of cardinality p. We draw connections between such entropic matroids and secret-sharing matroids and show that entropic matroids are linear matroids when p = 2, 3 but not when p = 9. Our results leave open the possibility for p-entropic matroids to be linear whenever p is prime, with particular cases proved here. Applications of entropic matroids to coding theory and cryptography are also discussed.|
|Citation:||Abbe, E, Spirkl, S. (2019). Entropic matroids and their representation. Entropy, 21 (10.3390/e21100948|
|Type of Material:||Journal Article|
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