M-matrices: a generalization of M-matrices based on eventually nonnegative matrices.
-point invariants of real geometries.
Magnifying elements of transformation semigroups.
Majorants of matrix norms and spectrum localization
Majorization bounds for Ritz values of Hermitian matrices.
m-applications over finite fields
Maps on matrices that preserve the spectral radius distance
Let ϕ be a surjective map on the space of n×n complex matrices such that r(ϕ(A)-ϕ(B))=r(A-B) for all A,B, where r(X) is the spectral radius of X. We show that ϕ must be a composition of five types of maps: translation, multiplication by a scalar of modulus one, complex conjugation, taking transpose and (simultaneous) similarity. In particular, ϕ is real linear up to a translation.
Maps on upper triangular matrices preserving zero products
Consider —the ring of all upper triangular matrices defined over some field . A map is called a zero product preserver on in both directions if for all the condition is satisfied if and only if . In the present paper such maps are investigated. The full description of bijective zero product preservers is given. Namely, on the set of the matrices that are invertible, the map may act in any bijective way, whereas for the zero divisors and zero matrix one can write as a composition...
Maps preserving spectral radius, numerical radius, spectral norm.
Maps Without Certain Singularities.
Mathematical basis of a system supporting interconnection design.
Matice s kladnými prvky a kritičnost jaderného reaktoru
Matrices and submatrices with constrained invariant factors
Matrices connected with Brauer's centralizer algebras.
Matrices de compagnon généralisées
Matrices of positive polynomials.
Matrices ordonnables : une étude algébrique
Matrices over centrally -graded rings.
Matrices totally positive relative to a tree.
Matrices which commute with a given matrix upon a subspace