On the existence of certain matrices
On the finite Fourier transforms of functions with infinite discontinuities.
On the finite Number of the Covariants of a Binary Quantic.
On the finiteness of the semigroup of conjugacy classes of left ideals for algebras with radical square zero
Let A be a finite-dimensional algebra over an algebraically closed field with radical square zero, and such that all simple A-modules have dimension at most two. We give a characterization of those A that have finitely many conjugacy classes of left ideals.
On the first eigenvalue of bipartite graphs.
On the Fischer inequality
On the fragmental structures.
On the Frobenius condition number of positive definite matrices.
On the function .
On the generalized Riccati matrix differential equation. Exact, approximate solutions and error estimate
In this paper explicit expressions for solutions of Cauchy problems and two-point boundary value problems concerned with the generalized Riccati matrix differential equation are given. These explicit expressions are computable in terms of the data and solutions of certain algebraic Riccati equations related to the problem. The interplay between the algebraic and the differential problems is used in order to obtain approximate solutions of the differential problem in terms of those of the algebraic...
On the Genesis of the Middle Product in Grassmann's Extensive Algebra
On the geometry of conjugacy classes in classical groupes.
On the Geometry of Positive Maps in Matrix Algebras.
On the group inverse of linear combinations of two group invertible matrices.
On the Hölder continuity of matrix functions for normal matrices.
On the inertia sets of some symmetric sign patterns
A matrix whose entries consist of elements from the set is a sign pattern matrix. Using a linear algebra theoretical approach we generalize of some recent results due to Hall, Li and others involving the inertia of symmetric tridiagonal sign matrices.
On the invariant factors of sums of integral matrices
On the inverse eigenvalue problems: the case of superstars.
On the inverse of the adjacency matrix of a graph
A real symmetric matrix G with zero diagonal encodes the adjacencies of the vertices of a graph G with weighted edges and no loops. A graph associated with a n × n non–singular matrix with zero entries on the diagonal such that all its (n − 1) × (n − 1) principal submatrices are singular is said to be a NSSD. We show that the class of NSSDs is closed under taking the inverse of G. We present results on the nullities of one– and two–vertex deleted subgraphs of a NSSD. It is shown that a necessary...
On the norm of GCD and related matrices.