• LIMITED APPROXIMATION OF NUMERICAL RANGE OF NORMAL MATRIX 

      Adam, M.; Maroulas, J. (2010)
      Let A be an n x n normal matrix, whose numerical range NR[A] is a k-polygon. If a unit vector v is an element of W subset of C(n), with dimW = k and the point v*Av is an element of IntNR[A], then NR[A] is circumscribed to ...
    • Near trapped modes in long array of truncated circular cylinders 

      Chatjigeorgiou I.K., Chatziioannou K., Mazarakos T. (2019)
      The purpose of this article is to investigate near trapped-mode occurrences by arrays of truncated cylinders. The basic question that this article tries to answer is whether near trapped modes (peak loading wave numbers) ...