Graphs determined by their (signless) Laplacian spectra.
Graphs whose minimal rank is two.
Graphs whose minimal rank is two: the finite fields case.
Grassmann formula for certain type of modules
Green's relations for stochastic matrices
Group inverse for the block matrix with two identical subblocks over skew fields.
Group inverses for matrices over a Bézout domain.
Group inverses of matrices with path graphs.
Groupes de Witt d'un corps de caractéristique 2.
G-tridiagonal majorization on
For , it is said that is g-tridiagonal majorized by (and it is denoted by ) if there exists a tridiagonal g-doubly stochastic matrix such that . In this paper, the linear preservers and strong linear preservers of are characterized on .
Guided Local Search for query reformulation using weight propagation
A new technique for query reformulation that assesses the relevance of retrieved documents using weight propagation is proposed. The technique uses a Guided Local Search (GLS) in conjunction with the latent semantic indexing model (to semantically cluster documents together) and Lexical Matching (LM). The GLS algorithm is used to construct a minimum spanning tree that is later employed in the reformulation process. The computations done for Singular Value Decomposition (SVD), LM and the minimum...
guaranteed cost control of discrete linear systems.
Hadamard product versions of the Chebyshev and Kantorovich inequalities.
Hadamard's inequality in inner product spaces.
Hall exponents of matrices, tournaments and their line digraphs
Let be a square -matrix. Then is a Hall matrix provided it has a nonzero permanent. The Hall exponent of is the smallest positive integer , if such exists, such that is a Hall matrix. The Hall exponent has received considerable attention, and we both review and expand on some of its properties. Viewing as the adjacency matrix of a digraph, we prove several properties of the Hall exponents of line digraphs with some emphasis on line digraphs of tournament (matrices).
Hamiltonian square roots of skew Hamiltonian quaternionic matrices.
Hankel determinants and the Sylvester theorem. (Déterminants de Hankel et théorème de Sylvester.)
Hankel determinants of some sequences of polynomials.
Hankel forms
It is an open question whether Nehari's theorem on the circle group has an analogue on the infinite-dimensional torus. In this note it is shown that if the analogue holds, then some interesting inequalities follow for certain trigonometric polynomials on the torus. We think these inequalities are false but are not able to prove that.
Hankel forms and sums of random variables
A well known theorem of Nehari asserts on the circle group that bilinear forms in H² can be lifted to linear functionals on H¹. We show that this result can be extended to Hankel forms in infinitely many variables of a certain type. As a corollary we find a new proof that all the norms on the class of Steinhaus series are equivalent.