I asked and answered a question on Math StackExchange- the first of three related questions. The third question will characterize all faces of the Tridiagonal Birkhoff polytope. The first question is about vertices of certain Tridiagonal Birkhoff faces, and the second will be about the combinatorial type of the facets of these certain faces.
I asked and answered a question on Math StackExchange- the first of three related questions. The third question will characterize all faces of the Tridiagonal Birkhoff polytope. The first question is about vertices of certain Tridiagonal Birkhoff faces, and the second will be about the combinatorial type of the facets of these certain faces.