Irreducible Toeplitz and Hankel matrices.
Isocanted alcoved polytopes
Through tropical normal idempotent matrices, we introduce isocanted alcoved polytopes, computing their -vectors and checking the validity of the following five conjectures: Bárány, unimodality, , flag and cubical lower bound (CLBC). Isocanted alcoved polytopes are centrally symmetric, almost simple cubical polytopes. They are zonotopes. We show that, for each dimension, there is a unique combinatorial type. In dimension , an isocanted alcoved polytope has vertices, its face lattice is the lattice...
Isometries of E2.
Isomorphism of generalized triangular matrix-rings and recovery of tiles.
Isotropic subspaces for pairs of Hermitian matrices.
Iteration einer n-Ecksabbildung.
Iterations of concave maps, the Perron-Frobenius theory, and applications to circle packings.
-spectral factorization for rational matrix functions with alternative realization.
Jacobi matrices with prescribed eigenvalues and diagonal elements
Jacobians of certain transformations of singular matrices
In this study various Jacobians of transformations of singular random matrices are found. An alternative proof of Uhlig's first conjecture (Uhlig (1994)) is proposed. Furthermore, we propose various extensions of this conjecture under different singularities. Finally, an application of the theory of singular distributions is discussed.
Jacobsthal numbers and alternating sign matrices.
Join Operations in Vector Spaces.
Jordan automorphisms of triangular algebras. II
We give a sufficient condition under which any Jordan automorphism of a triangular algebra is either an automorphism or an anti-automorphism.
Jordan basis for an infinite-dimensional space
Jordan Chains for Lambda Matrices, II.
Jucys-Murphy elements and the unitary Weingarten function
We describe an approach to the unitary Weingarten function based on the JM elements of symmetric group algebras. When combined with previously known properties of the Weingarten function, this gives a surprising connection with the Moebius function of the lattice of noncrossing partitions.
-kernel symmetric matrices.
Kantorovich type inequalities for ordered linear spaces.
Kaplanaky's radical and quadratic forms over non-real fields
Kellogg's iterations for general complex matrix