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Recent Submissions
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The group inverse of circulant matrices with few parameters
(2021)
Conference report
Open AccessThe need of solving linear systems with circulant matrices occurs in many problems related to the periodicity of that problem. This class of system appears in many applications that range from numerical solution of partial ... -
Overdetermined partial resolvent kernel for generalized cylinders
(2021)
Conference lecture
Open AccessOverdetermined partial boundary value problems are those where no data are prescribed onpart of the boundary, whereas both the values of the function and of its normal derivative aregiven on another part of the boundary. ... -
The group inverse of circulant matrices with few parameters
(2021)
Conference lecture
Open AccessThe need of solving linear systems with circulant matrices occursin many problems related to the periodicity of that problem. This class ofsystem appears in many applications that range from numerical solution ofpartial ... -
On spectra of symmetric Jacobi matrices
(2021)
Conference lecture
Open AccessA square symmetric matrix A is said bisymmetric if AS=SA, whereS is the matrix with ones along the secondary diagonal and zeroselsewhere. We denote by J(a,b) the real symmetric Jacobi matrixwith main ... -
Perturbing networks
(2012)
Conference lecture
Open AccessSemi-definite positive Schrödinger operators on finite connected networks are particular examples of a general class of self-adjoint operators called elliptic operators. Any elliptic operator defines an automorphism on the ... -
The group inverse of some circulant matrices
(2019)
Conference report
Open AccessWe present here necessary and sufficient conditions for the invertibility of some circulant matrices that depend on three parameters and moreover, we explicitly compute the inverse. Our study also encompasses a wide class ... -
Eigenvalues with respect to a weight for discrete elliptic boundary value problems
(2019)
Conference report
Open Access -
Green functions for boundary value problems on product networks
(2019)
Conference report
Open Access -
Generalizing the bottleneck matrix
(2019)
Conference report
Open AccessGiven the Laplacian matrix associated to a weighted graph and given x a single vertex of it, the bottleneck matrix (related to x) is the inverse matrix of the sub matrix of the Laplacian obtained by eliminating the row ... -
Discrete trace function and Poincaré inequality for the study of some linear systems
(2019)
Conference report
Open Access -
Green’s kernel of Schrödinger operators on generalized subdivision networks
(2017)
Conference report
Open Access -
Computing the Green function for a Dirichlet problem on spider networks
(2018)
Conference report
Open Access
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