Absolutely linear relations.
Absolutely linear relations (Short Communication).
Abstract linear dependence.
Abstract physical traces.
Actions of the symmetric group generated by comparable sets of integers and Smith invariants.
Acyclic digraphs and eigenvalues of -matrices.
Additional results on index splittings for Drazin inverse solutions of singular linear systems.
Additive compound matrices and an inequality for eigenvalues of symmetric stochastic matrices
Additive decomposition of matrices under rank conditions and zero pattern constraints
This paper deals with additive decompositions of a given matrix , where the ranks of the summands are prescribed and meet certain zero pattern requirements. The latter are formulated in terms of directed bipartite graphs.
Additive rank-one nonincreasing maps on Hermitian matrices over the field .
Adhérence d'orbite et invariants.
Adjacency preserving mappings of rectangular matrices.
Adjunctions in Monoidal categories.
Admissible estimators in the general multivariate linear model with respect to inequality restricted parameter set.
Admissible functions and asymptotics for labelled structures by number of components.
Advanced determinant calculus.
Aggregation/disaggregation iterative methods applied to Leontev systems and Markov chains
The paper surveys some recent results on iterative aggregation/disaggregation methods (IAD) for computing stationary probability vectors of stochastic matrices and solutions of Leontev linear systems. A particular attention is paid to fast IAD methods.
Aggregation/disaggregation method for safety models
The paper concerns the possibilities for mathematical modelling of safety related systems (equipment oriented on safety). Some mathematical models have been required by the present European Standards for the railway transport. We are interested in the possibility of using Markov’s models to meet these Standards. In the text an example of using that method in the interlocking equipment life cycle is given. An efficient aggregation/disaggregation method for computing some characteristics of Markov...
Alcune osservazioni sul rango numerico per operatori non lineari
We discuss some numerical ranges for Lipschitz continuous nonlinear operators and their relations to spectral sets. In particular, we show that the spectrum defined by Kachurovskij (1969) for Lipschitz continuous operators is contained in the so-called polynomial hull of the numerical range introduced by Rhodius (1984).
Alcune osservazioni sulle forme trilineari
Si studiano, nell'ambito della teoria delle forme trilineari, le cosidette -forme simmetriche, pervenendo ad un teorema di struttura utile per una possibile classificazione, ancora inesistente, di tali -forme.