A representation for non-colliding random walks.
A robust spectral method for finding lumpings and meta stable states of non-reversible Markov chains.
A scalarization technique for computing the power and exponential moments of Gaussian random matrices.
A semigroup treatment of some theorems on non-negative matrices
A simple cocyclic Jacket matrices.
A simple proof of the classification of normal Toeplitz matrices.
A Simple Proof of the Convexity of the Field of Values Defined by Two Hermitian Forms.
A simple proof of Valiant's lemma
A sparsity result on nonnegative real matrices with given spectrum
Let σ=(λ1,...,λn) be the spectrum of a nonnegative real n × n matrix. It is shown that σ is the spectrum of a nonnegative real n × n matrix having at most nonzero entries.
A Spectral Theory for Tensors
In this paper we propose a general spectral theory for tensors. Our proposed factorization decomposes a tensor into a product of orthogonal and scaling tensors. At the same time, our factorization yields an expansion of a tensor as a summation of outer products of lower order tensors. Our proposed factorization shows the relationship between the eigen-objects and the generalised characteristic polynomials. Our framework is based on a consistent multilinear algebra which explains how to generalise...
A subclass of strongly clean rings
In this paper, we introduce a subclass of strongly clean rings. Let be a ring with identity, be the Jacobson radical of , and let denote the set of all elements of which are nilpotent in . An element is called very -clean provided that there exists an idempotent such that and or is an element of . A ring is said to be very -clean in case every element in is very -clean. We prove that every very -clean ring is strongly -rad clean and has stable range one. It is shown...
A sufficient condition for Hurwitz stability of the convex combination of two matrices
A trace inequality for positive definite matrices.
A variant of the reciprocal super Catalan matrix
Recently Prodinger [8] considered the reciprocal super Catalan matrix and gave explicit formulæ for its LU-decomposition, the LU-decomposition of its inverse, and obtained some related matrices. For all results, q-analogues were also presented. In this paper, we define and study a variant of the reciprocal super Catalan matrix with two additional parameters. Explicit formulæ for its LU-decomposition, LUdecomposition of its inverse and the Cholesky decomposition are obtained. For all results, q-analogues...
Additive compound matrices and an inequality for eigenvalues of symmetric stochastic matrices
Additive rank-one nonincreasing maps on Hermitian matrices over the field .
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...
Algebraic Considerations on Powers of Stochastic Matrices
Algorithmes tronques de découpe linéaire