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
Contributor : Alexey Glutsyuk
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Submitted on : Thursday, December 14, 2017 - 3:50:19 PM
Last modification on : Friday, November 22, 2019 - 1:13:32 AM
