Extreme rays of the $(N, k)$-Schur Cone


الملخص بالإنكليزية

We discuss several partial results towards proving Dennis Whites conjecture on the extreme rays of the $(N,2)$-Schur cone. We are interested in which vectors are extreme in the cone generated by all products of Schur functions of partitions with $k$ or fewer parts. For the case where $k =2$, White conjectured that the extreme rays are obtained by excluding a certain family of bad pairs, and proved a special case of the conjecture using Farkas Lemma. We present an alternate proof of the special case, in addition to showing more infinite families of extreme rays and reducing Whites conjecture to two simpler conjectures.

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