Abstract : A rectangular matrix is called {\it totally positive} if all its minors are positive. A point of a real Grassmanian manifold $G_{l,m}$ of $l$-dimensional subspaces in $\mathbb R^m$ is called {\it strictly totally positive} if one can normalize its Pl\"ucker coordinates to make all of them positive. Clearly if a $k\times m$-matrix, $k
https://hal-ens-lyon.archives-ouvertes.fr/ensl-01664210
Contributeur : Alexey Glutsyuk
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Soumis le : jeudi 14 décembre 2017 - 15:50:19
Dernière modification le : jeudi 11 janvier 2018 - 06:26:59
Victor Buchstaber, Alexey Glutsyuk. Total positivity, Grassmannian and modified Bessel functions. A preliminary version, 8 pages. 2017. 〈ensl-01664210〉
