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  • Adaricheva, Kira; Nation, J.B. (2015)
    Various characterizations of finite convex geometries are well known. This note provides similar characterizations for possibly infinite convex geometries whose lattice of closed sets is strongly coatomic and lower ...
  • Mach, Thomas; Reichel, Lothar; Van Barel, Marc; Vandebril, R. (Journal of Computational and Applied Mathematics, 2016-09-01)
    Integral equations of the first kind with a smooth kernel and perturbed right-hand side, which represents available contaminated data, arise in many applications. Discretization gives rise to linear systems of equations ...
  • Adaricheva, Kira (2014)
    Representation of convex geometry as an appropriate join of compatible orderings of the base set can be achieved, when closure operator of convex geometry is algebraic, or finitary. This bears to the finite case proved by ...
  • Kadyrov, Shirali; Gorodnik, A. (2011)
  • Hazim, Hamad; Wei, Dongming; Elgindi, Mohamed B. M.; Soukiassian, Yeran (World Journal of Engineering and Technology, 2015)
    A lumped-parameter nonlinear spring-mass model which takes into account the third-order elastic stiffness constant is considered for modeling the free and forced axial vibrations of a graphene sheet with one fixed end ...
  • Wei, Dongming; Hazim, Hamad; Elgindi, Mohamed; Soukiassian, Yeran (2015)
    A lumped-parameter nonlinear spring-mass model which takes into account the third-order elastic sti ness constant is considered for mod- eling the free and forced axial vibrations of a graphene sheet with one xed end ...
  • Kadyrov, Shirali; Pohl, A. (2012)
    Recently, Einsiedler and the authors provided a bound in terms of escape of mass for the amount by which upper-semicontinuity for metric entropy fails for diagonal ows on homogeneous spaces 􀀀nG, where G is any connected ...
  • Antonopoulos, Chris G.; Skokos, Charalampos; Bountis, Tassos; Flach, Sergej (arXiv, 2018-03-19)
    In the study of subdiffusive wave-packet spreading in disordered Klein- Gordon (KG) nonlinear lattices, a central open question is whether the motion continues to be chaotic despite decreasing densities, or tends to become ...
  • Antonopoulos, Chris G.; Skokos, Charalampos; Bountis, Tassos; Flach, Sergej (Chaos, Solitons & Fractals, 2017-11-01)
    Abstract In the study of subdiffusive wave-packet spreading in disordered Klein–Gordon (KG) nonlinear lattices, a central open question is whether the motion continues to be chaotic despite decreasing densities, or tends ...
  • Tahir, M. H.; Cordeiro, Gauss M.; Alzaatreh, Ayman; Mansoor, M.; Zubair, M. (Communications in Statistics: Simulation and Computation, 2016-11-25)
    Many distributions have been used as lifetime models. In this article, we propose a new three-parameter Weibull–Pareto distribution, which can produce the most important hazard rate shapes, namely, constant, increasing, ...
  • Ferranti, Micol; Iannazzo, Bruno; Mach, Thomas; Vandebril, Raf (Calcolo, 2016-06-01)
    A unitary symplectic similarity transformation for a special class of Hamiltonian matrices to extended Hamiltonian Hessenberg form is presented. Whereas the classical Hessenberg form links to Krylov subspaces, the extended ...
  • Lefton, Lew; Wei, Dongming (Electronic journal of differential equations, 2001)
    We study approximations of the steady state Stokes problem governed by the power-law model for viscous incompressible non-Newtonian flow using the penalty formulation. We establish convergence and find error estimates.
  • Kominis, Yannis; Bountis, Tassos; Flach, Sergej (Scientific Reports, 2016-09-19)
    We consider the asymmetric active coupler (AAC) consisting of two coupled dissimilar waveguides with gain and loss. We show that under generic conditions, not restricted by parity-time symmetry, there exist finite-power, ...
  • Kadyrov, Shirali; Lawrence, Mark (2011)
    Let x = (x1; : : : ; xd) 2 [􀀀1; 1]d be linearly independent over Z, set K = f(ez; ex1z; ex2z : : : ; exdz) : jzj 1g:We prove sharp estimates for the growth of a polynomial of degree n, in terms of En(x) := supfkPk d+1 ...
  • Bonet, José; Wegner, Sven Ake (Functiones et Approximatio, Commentarii Mathematici, 2011)
    We establish a criterion to decide when a countable projective limit of countable inductive limits of normed spaces is bornological. We compare the conditions occurring within our criterion with well-known abstract conditions ...
  • Mach, Thomas; Pranić, Miroslav S.; Vandebril, Raf (Electronic Transactions on Numerical Analysis, 2014)
    It has been shown that approximate extended Krylov subspaces can be computed, under certain assumptions, without any explicit inversion or system solves. Instead, the vectors spanning the extended Krylov space are retrieved ...
  • Benner, Peter; Börm, Steffen; Mach, Thomas; Reimer, Knut (Computing and Visualization in Science, 2015-03-04)
    The computation of eigenvalues of large-scale matrices arising from finite element discretizations has gained significant interest in the last decade (Knyazev et al. in Numerical solution of PDE eigenvalue problems, vol ...
  • Betancor, Jorge J.; Castro, Alejandro J.; Fariña, Juan C.; Rodríguez-Mesa, L. (Journal of Mathematical Analysis and Applications, 2017-03-01)
    Abstract In this paper we consider conical square functions in the Bessel, Laguerre and Schrödinger settings where the functions take values in UMD Banach spaces. Following a recent paper of Hytönen, van Neerven and Portal ...
  • Kominis, Yannis; Kovanis, Vassilios; Bountis, Tassos (arXiv, 2018-03-07)
    Coupled semiconductor lasers are systems possessing complex dynamics that are interesting for numerous applications in photonics. In this work, we investigate the existence and the stability of asymmetric phase-locked ...
  • Kominis, Yannis; Kovanis, Vassilios; Bountis, Tassos (Physical Review, 2017-10-16)
    Coupled semiconductor lasers are systems possessing complex dynamics that are interesting for numerous applications in photonics. In this work, we investigate the existence and the stability of asymmetric phase-locked ...

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